Hello,

My setup:
Windows 7
Displayfusion Pro 7.1
I have taskbar mode set to "All taskbars show relevant windows" and taskbar button middle-click behavior is set to "open a new instance".

Steps to reproduce bug:
1. Open mspaint.exe (the standard windows paint program).
2. Move the window to second monitor, so that the displayfusion taskbar shows it.
3. Middle-click the paint taskbar icon. Here I would expect it to open a new instance of paint (this works with the original windows-taskbar, it only fails on the second monitor where the displayfusion taskbar is used), but paint gives the following error:

"C:\Windows\system32\mspaint.exe
Paint cannot read this file.
This is not a valid bitmap file, or its format is not currently supported."

It seems paint (or all programs, for that matter) receives the program location in the 0th program parameter, which would be expected, but also as the 1st program parameter (which for paint should be an image), resulting in the faulty behavior. Can I fix this or is this a genuine bug?

Sweet. Thanks for the heads-up.