Yay! Thank goodness for finding this thread! I don't have Chrome, but I'm running Firefox 16.0.1 on Windows 7 64 Bit. After the update that I got for DF (yesterday), my firefox pin on the second monitor began acting up.

Pinned to the second task bar is Quickbooks and Firefox. When the update happened, I decided to close Firefox (which I never do but was cleaning up for the afternoon). When Firefox closed, the pinned icon changed to a question mark. When I tried to launch it, I got this error (can't remember wording exactly): Display Fusion cannot find file "c:\Program Files (x86)\Mozilla Firefox\updated\firefox.exe". That's because firefox is not located in a folder called updated (there isn't even a folder called that!). So I deleted the pinned icon, opened firefox and repinned it. Everything looks great.

Closed firefox, and I get the question mark icon where firefox was pinned. Click it, no luck. So I right clicked it and went to "Edit this Pinned Item" and changed it to the correct location (just removed the updated folder from the location). Saved, Got my Firefox Icon back. Opened Firefox and instead of using the pinned icon, it just opened a new icon to the right side (see attachment). Not a huge deal, just an annoyance.

So while I'm posting this, I decided to try and make that original error again. So I went to edit the settings of the original pinned firefox and changed it back to the \updated\ location. Guess what? It merged the two icons like it should!! Firefox now is using the original pinned icon! But when you close Firefox, it goes back to a question mark. Any ideas at all?

TL; DR - When the Firefox Pinned is going to the correct location, it causes Firefox to open in a separate window (not the original pinned icon). When you fix the Firefox Pinned to the incorrect location, it has a question mark unless you already have Firefox opened, then it uses the pinned location.

If I need to start a new thread, I'll absolutely do so since it's a different program! I figured it would be best to keep them together seeing as it's the same issue as Chrome. Thanks!

Hey Keith! Thanks for your response and splitting it off

The command line is the correct path "C:\Program Files (x86)\Mozilla Firefox\Firefox.exe" - so the pinned shortcut goes to this item currently, and it opens in another icon.

With Firefox open, if I click on the pinned icon, it opens a new Firefox window behind the currently opened window. Is it confusing the shortcut some how?

Absolutely! Screenshot of command line attached. After repinning Firefox and closing it to get the question mark this is the error I get:

Failed to launch this application, the path does not exist.
C:\Program Files (x86)\Mozilla Firefox\updated\firefox.exe

Also, when I right click on firefox to pin it I get the following three things (listed from bottom to top): Close Window, Pin to Taskbar, updated. So for some reason display fusion thinks its in an updated folder before it's even pinned?

Anyways, Display Fusion settings attached also.

So this may sound strange...but I went out of town for the weekend and just got back to read your reply. Right clicked on Firefox, it doesn't have the updated spot anymore. Pinned it, unpinned the other and everything works great. Closed firefox, when I re-opened firefox, it had an update! Updated itself then asked if it could be my default browser (which it has always been). Everything is now... fixed?

So what I'm wondering is if firefox downloaded an update, but hadn't installed it for whatever reason. Thoughts? Thanks for your hard work and quick replies! Sorry this ended so prematurely :/

Hey Keith!

Sorry to re-open this but it's doing it again! I closed firefox and upon reopening it, it updated. How I'm back to the exact same scenario I was at before. I'm not sure how long it lasts until it goes back to normal. Any ideas?

Thanks!

A restart did it I'll remember that next time! It's a server, so it doesn't get rebooted often. Thanks again for your help!