Ever since I updated to version 3.4.1, Window Location stopped doing what I set it to do for some of the programs I have.
For example: I had iTunes set to minimize upon starting up, and the settings are still there after updating to 3.4.1, but it no longer minimizes the iTunes window when I start up iTunes.
I also have certain programs set to move to certain screens (the screen numbers weren't jumbled upon update, either), or go slightly transparent / become always on top using HotKeys, upon opening, but some of them stopped doing those things, while other programs still work just fine. I haven't been able to find any sort of pattern in the settings that could cause this, so it might just be a case-by-case problem with some conflict in coding or something with certain programs.

PS: I have the Pro version, and running Windows 7 64-bit, with three monitors, if that matters at all.

Well, there's only three programs in particular that aren't working for me that did work before, but considering that I don't have too many programs on Window Location, it means that there's possibly a high number of incompatible ones out there.
But I digress...
The following are programs that worked before that stopped working with the 3.4.1 update:

iTunes
-Monitor: It doesn't matter, since iTunes saves its location for future use on its own, so I just have it set to the monitor it's already on.
-Mode: First Window Only (Changing it to All Windows doesn't fix the problem.)
-Window Size: Minimize

IrfanView
-I have a couple of slideshow files created with IrfanView in Window Location. All of them has Mode set to "All Windows", but it still doesn't work on "First Window Only" mode. I also have them open on various monitors, but I've tried changing the Monitor rules, but that doesn't fix the problem. There's also some that I have set to open on the default screen, with Window Size set to run the HotKey "Toggle Window Always on Top", but that doesn't work, either, even when I tried other Mode and Monitor settings with it.

MAL Updater (A pretty uncommon program used to update one's account on MyAnimeList.net, among other things relating to the site.)
-This program saves its own location, as well, so there's no problem for that. I have Mode set to "All Windows" and Windows Size set to run a HotKey that makes it 80% transparent.

So for all of these programs, I've tried a bunch of combinations with the rules' settings, and none of it works, so it's definitely not specific settings that cause it to not work, and simply that it's incompatible with certain programs on a case-by-case situation due to the recent code changes. The only solution I can see is finding the specific change(s) that caused things to stop working for some programs (but I'm not programmer, so what do I know... XD), but that could be very tedious.

I recently noticed another problem with this on something that is working, but not working 100% properly.

I have my explorer windows automatically run the HotKey to become 80% transparent (with Mode: All Windows). The windows do turn transparent when I open an explorer window, but as long as these settings are turned on in DisplayFusion, whenever I drag files to and from (or within) the explorer window, the file I'm dragging blink like crazy as long as it's being dragged (as if Window Location is trying to apply and un-apply the transparent effect to it continuously). This happens only when the settings are turned on, and only on "All Windows" mode (regardless if the actual window is transparent or not).
Not only that, but because of this, when I try to move stuff, it won't actually register (and do nothing to the file in hand) most of the time (probably when I release the file at the moment it's trying to apply the transparency).

Is there a way for me to downgrade to the last DisplayFusion version while this is being looked at, by the way?

So I downgraded to v3.4.0, all the programs that I started having problems with in v3.4.1 no longer had any problems, including Mal Updater (which is build 2.8.0.3577, the latest, I believe). The flashing icons in explorer.exe (when Window Location has that set for All Windows to go transparent) problem is also gone in v3.4.0. I forgot to test this problem with view settings other than "Large Icons" (since most of my folders are in this view setting) in v3.4.1 before downgrading, so don't know if this problem still occurs in other view settings such as "List", "Details", etc.

So IrfanView slideshows are, once again, fully functional with Window Location (as far as I can tell) with this update.
MAL Updater windows still don't become transparent, and iTunes still doesn't minimize, though.
As for Window's explorer windows, the icons still blink when dragged, but nowhere near as rapidly as before, and it also no longer interferes with moving files.

None of the windows turn transparent.

Actually, now that I've had more time with it, it still does interfere with moving/dragging files, I've noticed; it just does it much less often, due to the it not flashing as rapidly.

This is probably asking for too much, but is it possible to have a feature in a later build where one can use the old code for Window Location prior to 3.4.1? Ever since the major change of the code for Window Location, not only has there been a lot of issues, but even some of the minor "improvements" turned out to be more problematic than helpful. But that might be just me.
All the other new features in the beta are great though, so I still want to use the up-to-date version for those features.

For some reason, iTunes still doesn't minimize, and the secondary window on MAL Updater doesn't become transparent (the main window does, though). Also, Beta 15 made dragging files in the window explorer windows (with transparency via Window Location turned on for them) glitchy again. I think it was Beta 12 or 13 that had this problem completely fixed, and Beta 14 didn't have problems for me regarding this, as well (although I didn't restart my computer after installing Beta 14 before updating to 15, if that does anything). With Beta 15, it's glitchy, again, but in slightly different way than before. Before, the dragged icon would blink rapidly, but now, when I drag stuff, the icon completely disappears, and a wide white box appears until I let go of the mouse button.

For MAL Updater, I'm having the issue where the main window sometimes doesn't become transparent, as well. As for what the 2nd window I'm talking about looks like, take a took at the first attackment. This opens at launch for me; it might not open by default when one first gets the program, though.

As for the windows explorer issue, the second attachment is what it looks like when I try to drag anything (files or folders) to and/or from the explorer window. As long as the mouse cursor is still dragging the item and is currently over the Windows Explorer window, the box is visible; as soon as the cursor hovers somewhere else, the box disappears, but reappears again if the cursor is moved back over it. For about the first 1/4 to 1/2 of a second, you can still see the item that you're dragging following the mouse, but then the icon gets replaced by the box as seen in the attachment.
[I'm not sure if the following information is helpful at all, but I'll include it, anyway: This box is always the same size when dragging from from within the Windows Explorer. When dragging image files from an internet explorer window to Windows Explorer, the box is the size of the image as it's currently displayed (excluding tiny images, in which case the box is has a minimum size that's bigger than it).]
Also, my video card's driver is up-to-date.

So I've noticed that the minimizing problem still hasn't been fixed 100%. The very first time I start up iTunes after booting up the computer, it does not minimize. But, after that, if I close iTunes then re-open iTunes, then it will minimize. It's just the very first time that I open it after logging in that it doesn't work.
I have yet to test it for the first occurrence when I simply log off then log on again.

I've waited at least a few minutes after DisplayFusion has loaded, and even checked if other Window Location settings work (such as explorer.exe going transparent) before opening iTunes, and it still doesn't minimize the first time. The first time after logging off and on again doesn't have this problem, though. I wonder why it's not working for me but is for you. I don't have iTunes on the main monitor, if that means anything.

This was totally fine before I started having this problem around the time that Window Location got a code overhaul. Perhaps that since the coding is much more complex now, it is now making things transparent that the old code didn't, which allows for problems in addition places. I'm pretty sure this problem (which was a blinking problem, then) was somehow temporarily fixed in Beta 12 or 13 of 4.0.0 but came back in Beta 15 (as a white-box problem, instead).

So I restarted my computer a few hours ago, and just now started up iTunes for the first time since then, and it minimizes correctly, so it's probably what you said earlier about the hooks (unless it's the new beta that fixed it, since it's also my first time starting the computer since the latest beta version or two). If it is what you said, then I'm not sure how long it takes to load the necessary hooks, as I haven't tested it on a bunch of different intervals. It certainly takes longer than the hooks that makes windows transparent, as I've previously mentioned in my last post.

I waited until everything seems to be in idle, and it still doesn't minimize on the first start-up of iTunes.

Also, I'm writing to mention a new problem with Window Location with the latest beta version (v4.1.0 Beta 14). When I open up the window panel from the taskbar (the one with the search bar, recently opened programs, the Shut down button, etc.) and click the arrow next to the Shut down button to pull up the additional pop-up menu with Log off, restart, etc., that pop-up menu (or other pop-up menus like the one for Administrative Tools) gets affected by the Windows Location rule set to affect Explorer.exe.
For my case, I have it set so that explorer navigation windows open on my secondary screen and turn slightly transparent. With that rule, the latest beta now does that to the aforementioned pop-up menu, so it moves to my other screen and turns slightly transparent, as well.

Add Photoshop 6 to the list. Any idea's??

Keith,

Add Spyder2express.exe V2.3.6 Monitor Color Calibration to the list that does not honor Window Location. This program is not an installed application. It always wants to run on a specific monitor of its choosing. Unless you have a license serial number, it will not be possible to test where the display ends up.

FYI, Spyder2express V2.3.6 is a 64 bit version of Spyder2 that is specific to building a Color LUT for 1 monitor (Spyder Pro has multiple monitor support but think $$). It places the adjustment screen on the monitor designated in the BIOS for the BIOS screen. By changing the BIOS or re-cabling, it is possible to build unique CLUT's (via renaming) and then have either Windows Color management or Spyder Profile Chooser load the correct CLUT into the video cards. DisplayFusion Window Location would make this a simpler action. The Monitor CLUT re-calibration is not a frequent routine so the inconvenience is not that great.