No problem in 3.0.6, I just tested that again

Debug:

--- Machine ------------
Operating System: Microsoft Windows NT 6.1.7600.0
Operating System Version: 6.1.7600.0
Detected Version: Windows7
CPU: x64
Date/Time (UTC): 09/13/2009 07:45:49
Date/Time (Local): 09/13/2009 09:45:49
.NET Framework: 2.0.50727.4927
CurrentCulture: English (United States) (en-US ~ en)
CurrentUICulture: English (United States) (en-US ~ en)

--- Wallpaper ------------
Wallpaper Span: True
Spanned Image: C:\Users\xxx\Documents\My Wallpapers\01707_spectrumofthesky_2560x1600.jpg (Exists: True)
Windows Wallpaper: C:\Users\xxx\AppData\Roaming\Binary Fortress Software\DisplayFusion\CustomWallpaper.bmp (Exists: True)
Generated Wallpaper Folder: C:\Users\xxx\AppData\Roaming\DisplayFusion

--- DisplayFusion ------------
Name: DisplayFusion Pro v3.1.2
Build Date: sep 03, 2009 22:06
Pro: True
Pro License:
Command Line: "C:\Program Files (x86)\DisplayFusion\DisplayFusion.exe"
Current Folder: C:\Program Files (x86)\DisplayFusion
Performance Mode: False
Mouse Hooks: True
Application Hooks: True
System Hooks Pause FullScreen: False
Process Integrity Level: High

--- DisplayFusion x86 Hook DLL ------------
Path: C:\Program Files (x86)\DisplayFusion\DisplayFusionHookx86.dll
Name: DisplayFusion Hook
Prod Version: 1, 8, 0, 0
File Version: 1, 8, 0, 0
Size: 48 304 bytes

--- DisplayFusion x64 Hook DLL ------------
Path: C:\Program Files (x86)\DisplayFusion\DisplayFusionHookx64.dll
Name: DisplayFusion Hook
Prod Version: 1, 8, 0, 0
File Version: 1, 8, 0, 0
Size: 60 592 bytes

--- DisplayFusion x86 Hook Exe ------------
Path: C:\Program Files (x86)\DisplayFusion\DisplayFusionHookx86.exe
Name: DisplayFusion Hook x86
Prod Version: 1, 2, 0, 0
File Version: 1, 2, 0, 0
Size: 92 848 bytes

--- Monitor 1 (Primary:True ~ Real:True) ------------
Name: \\.\DISPLAY1
Bounds: {X=0,Y=0,Width=1600,Height=1200}
WorkArea: {X=0,Y=0,Width=1600,Height=1160}

--- Monitor 2 (Primary:False ~ Real:True) ------------
Name: \\.\DISPLAY2
Bounds: {X=1600,Y=0,Width=1600,Height=1200}
WorkArea: {X=1600,Y=0,Width=1600,Height=1200}

--- Screens ------------
Count: 2
Point Min X: 0
Point Min Y: 0
Point Max X: 3200
Point Max Y: 1200
Total Width: 3200
Total Height: 1200
ActiveDesktop: False

--- Screen 1------------
ScreenID: 0
Device: \\.\DISPLAY1
Bounds: {X=0,Y=0,Width=1600,Height=1200}
MoveH: 0
MoveV: 0

--- Screen 2------------
ScreenID: 1
Device: \\.\DISPLAY2
Bounds: {X=1600,Y=0,Width=1600,Height=1200}
MoveH: 0
MoveV: 0

--- Managed Threads ------------
Count: 3
ID:4 ~ Name:HookManager ~ Age:00:00:22.4062816 ~ Alive:True ~ BG:True ~ State:Background ~ Thread Name:HookManager_875b08be-0ebe-4ce7-8929-e60dc0de446b
ID:5 ~ Name:HookManagerProcess ~ Age:00:00:22.3642792 ~ Alive:True ~ BG:True ~ State:Background ~ Thread Name:HookManagerProcess_ced406d3-e8d7-4669-8b5a-1e88f6ec95f6
ID:7 ~ Name:Hook:WM_LBUTTONDOWN ~ Age:00:00:00.0990057 ~ Alive:True ~ BG:True ~ State:Background ~ Thread Name:Hook:WM_LBUTTONDOWN_abc0849c-526b-4253-b8ea-33b01a036ad4

--- Taskbars ------------
Enabled: True
Auto-hide: False
Visual Styles: True
Visual Styles Detected: True
DWM Composition Detected: True
Opacity: 100
Flash Blink: True
Window Options: ShowRelevant
Button Width Max: 160
Sizing Bar Size: 0
Full Screen: None
Error: Invoke or BeginInvoke cannot be called on a control until the window handle has been created.

--- Taskbar Items ------------
"DisplayFusion Pro ~ Settings" (000718fc:000718fc:000718fc ~ None ~ {X=424,Y=329,Width=751,Height=501})
"Inbox - Shredder" (00080602:00080602:00080602 ~ None ~ {X=1592,Y=-8,Width=1616,Height=1216})
"Can't get task bar to appear on two monitors - Namoroka (Build 20090911051033)" (000104ec:000104ec:000104ec ~ None ~ {X=288,Y=216,Width=1040,Height=856})
"DisplayFusion-3.1.2.zip - WinRAR" (00020674:00020674:00020674 ~ None ~ {X=2015,Y=237,Width=826,Height=690})
"Calculator" (00040680:00040680:00040680 ~ None ~ {X=1721,Y=419,Width=228,Height=322})
"C:\Program Files (x86)\DisplayFusion" (0002070e:0002070e:0002070e ~ None ~ {X=399,Y=289,Width=1200,Height=870})

--- TitleBar Buttons ------------
Enabled: False
DisplayFusion Caption Button Size: {Width=35, Height=21}
System Caption Button Size: {Width=35, Height=21}

still no go

--- Machine ------------
Operating System: Microsoft Windows NT 6.1.7600.0
Operating System Version: 6.1.7600.0
Detected Version: Windows7
CPU: x64
Date/Time (UTC): 09/17/2009 21:22:57
Date/Time (Local): 09/17/2009 23:22:57
.NET Framework: 2.0.50727.4927
CurrentCulture: English (United States) (en-US ~ en)
CurrentUICulture: English (United States) (en-US ~ en)

--- Wallpaper ------------
Wallpaper Span: True
Spanned Image: C:\Users\XXXXX\Documents\My Wallpapers\01707_spectrumofthesky_2560x1600.jpg (Exists: True)
Windows Wallpaper: C:\Users\XXXX\AppData\Roaming\DisplayFusion\Wallpaper_1.jpg (Exists: True)
Generated Wallpaper Folder: C:\Users\XXXX\AppData\Roaming\DisplayFusion

--- DisplayFusion ------------
Name: DisplayFusion Pro v3.1.3
Build Date: sep 16, 2009 10:28
Pro: True
Pro License:
Command Line: "C:\Program Files (x86)\DisplayFusion\DisplayFusion.exe"
Current Folder: C:\Program Files (x86)\DisplayFusion
Performance Mode: False
Mouse Hooks: True
Application Hooks: True
System Hooks Pause FullScreen: False
Process Integrity Level: High
Font Scaling: 1

--- DisplayFusion x86 Hook DLL ------------
Path: C:\Program Files (x86)\DisplayFusion\DisplayFusionHookx86.dll
Name: DisplayFusion Hook
Prod Version: 1, 9, 0, 0
File Version: 1, 9, 0, 0
Size: 48 304 bytes

--- DisplayFusion x64 Hook DLL ------------
Path: C:\Program Files (x86)\DisplayFusion\DisplayFusionHookx64.dll
Name: DisplayFusion Hook
Prod Version: 1, 9, 0, 0
File Version: 1, 9, 0, 0
Size: 60 080 bytes

--- DisplayFusion x86 Hook Exe ------------
Path: C:\Program Files (x86)\DisplayFusion\DisplayFusionHookx86.exe
Name: DisplayFusion Hook x86
Prod Version: 1, 4, 0, 0
File Version: 1, 4, 0, 0
Size: 92 848 bytes

--- Monitor 1 (Primary:True ~ Real:True) ------------
Name: \\.\DISPLAY1
Bounds: {X=0,Y=0,Width=1600,Height=1200}
WorkArea: {X=0,Y=0,Width=1600,Height=1160}

--- Monitor 2 (Primary:False ~ Real:True) ------------
Name: \\.\DISPLAY2
Bounds: {X=1600,Y=0,Width=1600,Height=1200}
WorkArea: {X=1600,Y=0,Width=1600,Height=1200}

--- Screens ------------
Count: 2
Point Min X: 0
Point Min Y: 0
Point Max X: 3200
Point Max Y: 1200
Total Width: 3200
Total Height: 1200
ActiveDesktop: False

--- Screen 1------------
ScreenID: 0
Device: \\.\DISPLAY1
Bounds: {X=0,Y=0,Width=1600,Height=1200}
MoveH: 0
MoveV: 0

--- Screen 2------------
ScreenID: 1
Device: \\.\DISPLAY2
Bounds: {X=1600,Y=0,Width=1600,Height=1200}
MoveH: 0
MoveV: 0

--- Managed Threads ------------
Count: 4
ID:4 ~ Name:HookManager ~ Age:00:01:27.4418432 ~ Alive:True ~ BG:True ~ State:Background ~ Thread Name:HookManager_6b185510-3aac-4650-b74c-8367f8caa0c7
ID:5 ~ Name:HookManagerProcess ~ Age:00:01:26.9918363 ~ Alive:True ~ BG:True ~ State:Background ~ Thread Name:HookManagerProcess_50fdddc3-2cf2-4af5-b7a9-f7d94be2e754
ID:12 ~ Name:TaskbarManager ~ Age:00:00:09.7613999 ~ Alive:True ~ BG:True ~ State:Background ~ Thread Name:TaskbarManager_59df0601-c5a3-4032-bb8b-1fd9249639e4
ID:14 ~ Name:Hook:WM_LBUTTONDOWN ~ Age:00:00:00.2525039 ~ Alive:True ~ BG:True ~ State:Background ~ Thread Name:Hook:WM_LBUTTONDOWN_3bf81b3e-a11f-465b-9ca4-b853b4075513

--- FullScreen Applications ------------
None

--- Taskbars ------------
Enabled: True
Auto-hide: False
Visual Styles: True
Visual Styles Detected: True
DWM Composition Detected: True
Opacity: 100
Flash Blink: True
Window Options: ShowRelevant
Button Width Max: 160
Button Icon Size: 32
Sizing Bar Size: 0
Count: 0

--- Deleted Items (0)------------
None

--- Taskbar Items ------------
"DisplayFusion Pro ~ Settings" (00080730:00080730:00080730 ~ None ~ {X=424,Y=329,Width=751,Height=501})
"Taskbar only on 1 screen 3.1.2 - Namoroka (Build 20090916051733)" (0006040c:0006040c:0006040c ~ None ~ {X=-8,Y=-8,Width=1616,Height=1176})
"Inbox - Shredder" (0003040a:0003040a:0003040a ~ None ~ {X=1600,Y=0,Width=160,Height=100})
"Windows Update" (00030680:00030680:00030680 ~ None ~ {X=242,Y=120,Width=1000,Height=748})
"Software Update" (000305f6:000305f6:000305f6 ~ None ~ {X=580,Y=386,Width=439,Height=388})

--- TitleBar Buttons ------------
Enabled: False
DisplayFusion Caption Button Size: {Width=35, Height=21}
System Caption Button Size: {Width=35, Height=21}

--- Machine ------------
Operating System: Microsoft Windows NT 6.1.7600.0
Operating System Version: 6.1.7600.0
Detected Version: Windows7
CPU: x64
Date/Time (UTC): 09/17/2009 22:15:22
Date/Time (Local): 09/18/2009 00:15:22
.NET Framework: 2.0.50727.4927
CurrentCulture: English (United States) (en-US ~ en)
CurrentUICulture: English (United States) (en-US ~ en)

--- Wallpaper ------------
Wallpaper Span: True
Spanned Image: C:\Users\XXXXX\Documents\My Wallpapers\01707_spectrumofthesky_2560x1600.jpg (Exists: True)
Windows Wallpaper: C:\Users\XXXX\AppData\Roaming\DisplayFusion\Wallpaper_1.jpg (Exists: True)
Generated Wallpaper Folder: C:\Users\XXXAppData\Roaming\DisplayFusion

--- DisplayFusion ------------
Name: DisplayFusion Pro v3.1.3
Build Date: sep 16, 2009 10:28
Pro: True
Pro License:
Command Line: "C:\Program Files (x86)\DisplayFusion\DisplayFusion.exe"
Current Folder: C:\Program Files (x86)\DisplayFusion
Performance Mode: False
Mouse Hooks: True
Application Hooks: True
System Hooks Pause FullScreen: False
Process Integrity Level: High
Font Scaling: 1

--- DisplayFusion x86 Hook DLL ------------
Path: C:\Program Files (x86)\DisplayFusion\DisplayFusionHookx86.dll
Name: DisplayFusion Hook
Prod Version: 1, 9, 0, 0
File Version: 1, 9, 0, 0
Size: 48 304 bytes

--- DisplayFusion x64 Hook DLL ------------
Path: C:\Program Files (x86)\DisplayFusion\DisplayFusionHookx64.dll
Name: DisplayFusion Hook
Prod Version: 1, 9, 0, 0
File Version: 1, 9, 0, 0
Size: 60 080 bytes

--- DisplayFusion x86 Hook Exe ------------
Path: C:\Program Files (x86)\DisplayFusion\DisplayFusionHookx86.exe
Name: DisplayFusion Hook x86
Prod Version: 1, 4, 0, 0
File Version: 1, 4, 0, 0
Size: 92 848 bytes

--- Monitor 1 (Primary:True ~ Real:True) ------------
Name: \\.\DISPLAY1
Bounds: {X=0,Y=0,Width=1600,Height=1200}
WorkArea: {X=0,Y=0,Width=1600,Height=1160}

--- Monitor 2 (Primary:False ~ Real:True) ------------
Name: \\.\DISPLAY2
Bounds: {X=1600,Y=0,Width=1600,Height=1200}
WorkArea: {X=1600,Y=0,Width=1600,Height=1200}

--- Screens ------------
Count: 2
Point Min X: 0
Point Min Y: 0
Point Max X: 3200
Point Max Y: 1200
Total Width: 3200
Total Height: 1200
ActiveDesktop: False

--- Screen 1------------
ScreenID: 0
Device: \\.\DISPLAY1
Bounds: {X=0,Y=0,Width=1600,Height=1200}
MoveH: 0
MoveV: 0

--- Screen 2------------
ScreenID: 1
Device: \\.\DISPLAY2
Bounds: {X=1600,Y=0,Width=1600,Height=1200}
MoveH: 0
MoveV: 0

--- Managed Threads ------------
Count: 4
ID:3 ~ Name:TaskbarManager ~ Age:00:00:09.0341398 ~ Alive:True ~ BG:True ~ State:Background ~ Thread Name:TaskbarManager_90f01dd3-bb9c-4729-877a-b57e1c781372
ID:4 ~ Name:HookManager ~ Age:00:00:09.0291397 ~ Alive:True ~ BG:True ~ State:Background ~ Thread Name:HookManager_8953eb64-0191-4f02-8ab1-106c24b3067f
ID:5 ~ Name:HookManagerProcess ~ Age:00:00:08.4341305 ~ Alive:True ~ BG:True ~ State:Background ~ Thread Name:HookManagerProcess_bf03408b-e8f1-46ff-ae70-cd24ed660f3c
ID:7 ~ Name:Hook:WM_LBUTTONDOWN ~ Age:00:00:00.0662510 ~ Alive:True ~ BG:True ~ State:Background ~ Thread Name:Hook:WM_LBUTTONDOWN_a5d42f56-3f98-41df-af25-1ebaeee8357c

--- FullScreen Applications ------------
None

--- Taskbars ------------
Enabled: True
Auto-hide: False
Visual Styles: True
Visual Styles Detected: True
DWM Composition Detected: True
Opacity: 100
Flash Blink: True
Window Options: ShowRelevant
Button Width Max: 160
Button Icon Size: 32
Sizing Bar Size: 0
Count: 0

--- Deleted Items (0)------------
None

--- Taskbar Items ------------
"DisplayFusion Pro ~ Settings" (00040428:00040428:00040428 ~ None ~ {X=424,Y=329,Width=751,Height=501})
"DisplayFusion Pro ~ Desktop Wallpaper" (000e03b8:000e03b8:000e03b8 ~ None ~ {X=392,Y=281,Width=815,Height=597})
"Taskbar only on 1 screen 3.1.2 - Namoroka (Build 20090916051733)" (000702ec:000702ec:000702ec ~ None ~ {X=-8,Y=-8,Width=1616,Height=1176})
"Software Update" (00040522:00040522:00040522 ~ None ~ {X=580,Y=386,Width=439,Height=388})
"Inbox - Shredder" (00050406:00050406:00050406 ~ None ~ {X=1592,Y=-8,Width=1616,Height=1216})
"D:\[ D O W N L O A D ]\[ T E M P ]" (000206aa:000206aa:000206aa ~ None ~ {X=399,Y=289,Width=1200,Height=870})

--- TitleBar Buttons ------------
Enabled: False
DisplayFusion Caption Button Size: {Width=35, Height=21}
System Caption Button Size: {Width=35, Height=21}

new 3.1.4

--- Machine ------------
Operating System: Microsoft Windows NT 6.1.7600.0
Operating System Version: 6.1.7600.0
Detected Version: Windows7
CPU: x64
Date/Time (UTC): 09/17/2009 22:25:04
Date/Time (Local): 09/18/2009 00:25:04
.NET Framework: 2.0.50727.4927
CurrentCulture: (United States) (en-US ~ en)
CurrentUICulture: English (United States) (en-US ~ en)

--- Wallpaper ------------
Wallpaper Span: True
Spanned Image: C:\Users\xxxxx\Documents\My Wallpapers\01707_spectrumofthesky_2560x1600.jpg (Exists: True)
Windows Wallpaper: C:\Users\xxxxx\AppData\Roaming\DisplayFusion\Wallpaper_1.jpg (Exists: True)
Generated Wallpaper Folder: C:\Users\xxxxx\AppData\Roaming\DisplayFusion

--- DisplayFusion ------------
Name: DisplayFusion Pro v3.1.4
Build Date: sep 17, 2009 17:39
Pro: True
Pro License:
Command Line: "C:\Program Files (x86)\DisplayFusion\DisplayFusion.exe"
Current Folder: C:\Program Files (x86)\DisplayFusion
Performance Mode: False
Mouse Hooks: True
Application Hooks: True
System Hooks Pause FullScreen: False
Process Integrity Level: High
Font Scaling: 1

--- DisplayFusion x86 Hook DLL ------------
Path: C:\Program Files (x86)\DisplayFusion\DisplayFusionHookx86.dll
Name: DisplayFusion Hook
Prod Version: 1, 9, 0, 0
File Version: 1, 9, 0, 0
Size: 48 304 bytes

--- DisplayFusion x64 Hook DLL ------------
Path: C:\Program Files (x86)\DisplayFusion\DisplayFusionHookx64.dll
Name: DisplayFusion Hook
Prod Version: 1, 9, 0, 0
File Version: 1, 9, 0, 0
Size: 60 080 bytes

--- DisplayFusion x86 Hook Exe ------------
Path: C:\Program Files (x86)\DisplayFusion\DisplayFusionHookx86.exe
Name: DisplayFusion Hook x86
Prod Version: 1, 4, 0, 0
File Version: 1, 4, 0, 0
Size: 92 848 bytes

--- Monitor 1 (Primary:True ~ Real:True) ------------
Name: \\.\DISPLAY1
Bounds: {X=0,Y=0,Width=1600,Height=1200}
WorkArea: {X=0,Y=0,Width=1600,Height=1160}

--- Monitor 2 (Primary:False ~ Real:True) ------------
Name: \\.\DISPLAY2
Bounds: {X=1600,Y=0,Width=1600,Height=1200}
WorkArea: {X=1600,Y=0,Width=1600,Height=1200}

--- Screens ------------
Count: 2
Point Min X: 0
Point Min Y: 0
Point Max X: 3200
Point Max Y: 1200
Total Width: 3200
Total Height: 1200
ActiveDesktop: False

--- Screen 1------------
ScreenID: 0
Device: \\.\DISPLAY1
Bounds: {X=0,Y=0,Width=1600,Height=1200}
MoveH: 0
MoveV: 0

--- Screen 2------------
ScreenID: 1
Device: \\.\DISPLAY2
Bounds: {X=1600,Y=0,Width=1600,Height=1200}
MoveH: 0
MoveV: 0

--- Managed Threads ------------
Count: 4
ID:3 ~ Name:TaskbarManager ~ Age:00:00:09.9568177 ~ Alive:True ~ BG:True ~ State:Background ~ Thread Name:TaskbarManager_76e0ff88-f2ac-4fa1-9f86-8d0afbd2d374
ID:4 ~ Name:HookManager ~ Age:00:00:09.9568177 ~ Alive:True ~ BG:True ~ State:Background ~ Thread Name:HookManager_0842803d-19cc-4a14-a957-b9a43c497e41
ID:5 ~ Name:HookManagerProcess ~ Age:00:00:09.4108167 ~ Alive:True ~ BG:True ~ State:Background ~ Thread Name:HookManagerProcess_13628e69-b35e-4725-b5a1-a615fc052535
ID:8 ~ Name:Hook:WM_LBUTTONDOWN ~ Age:00:00:00.0780001 ~ Alive:True ~ BG:True ~ State:Background ~ Thread Name:Hook:WM_LBUTTONDOWN_b9f234f6-12ad-476e-8bd3-cdd1cf7be782

--- FullScreen Applications ------------
None

--- Taskbars ------------
Enabled: True
Auto-hide: False
Visual Styles: True
Visual Styles Detected: True
DWM Composition Detected: True
Opacity: 100
Flash Blink: True
Window Options: ShowRelevant
Button Width Max: 160
Button Icon Size: 32
Sizing Bar Size: 0
Count: 0

--- Deleted Items (0)------------
None

--- Taskbar Items ------------
"DisplayFusion Pro ~ Settings" (00090404:00090404:00090404 ~ None ~ {X=424,Y=329,Width=751,Height=501})
"Namoroka Update" (000f05e4:000f05e4:000f05e4 ~ None ~ {X=607,Y=552,Width=386,Height=95})
"VMware Workstation Setup" (000a0910:000a0910:000a0910 ~ None ~ {X=1477,Y=411,Width=503,Height=382})
"D:\[ D O W N L O A D ]\[ T E M P ]" (000206aa:000206aa:000206aa ~ None ~ {X=399,Y=289,Width=1200,Height=870})

--- TitleBar Buttons ------------
Enabled: False
DisplayFusion Caption Button Size: {Width=35, Height=21}
System Caption Button Size: {Width=35, Height=21}