Unfortunately, we haven't gotten any feedback from Adobe and they seem to be more or less ignoring this bug. I temporarily fixed the issue by restoring my computer to an older state. However, after a while the extension manager stopped working again. I thought this was related to a Windows7 update but my coworker had the manager start working and stop working without doing an update.

Currently our workaround is to use JSFL to package/compile swc's into the AppData folder location.

Thanks for the reply Carl. Are there any suggestions on how we could go about determining what the issue is (or fixing it)? I'm not sure if there is any other information I could post to this forum (logs, error logs?) that could give light to this situation.

I am going to post this here as well:

I am having the same issue.  I cannot open the Extension Manager to manage or install new dreamweaver extensions.  It runs in the processes but does not open a window.  I have tried everything, except an uninstall and clean install of the entire creative suite (I want to avoid this b/c I have so much to set back up and it would litterally take me a week or more to do that).

Well I kind of figured the issue out here, but still have not found the solution to get it to open in my user account.  The issue is with the Wiindows user account somewhere.

I created a test user account called "test" and gave it administrative rights. 

I logged in and clicked on adobe extension manager.  It opened.  The problem is that you cannot install or manage the extensions on one user to use with another windows user account.  BOOOO!

Well does anyone know how I can compare my user settings to see what the heck is causing this issue.  When I check my user account information within the control panel and user accounts it only gives little information that can be updated and the original user account where the extension manager is not working is set to administrator in all aspects.

Please any input would be great from anyone.  It seems there are a lot of people with this issue.

Thanks,

Ernie T.

Well I was able fixed my issue, but only after doing a complete restore of my computer from a backup I had from a month ago.  I did all the updates for microsoft but will keep the flash response above close by in case it happens again to try that. 

Thanks and good luck to those of you that are still having the issue and do not have a backup to restore from.

Ernie

I had the Flash Firebug plug-in for Firefox installed.  After uninstalling it, the extension manager opens.

Thanks!

The issue of Extension Manager not appearing seems to have been around for at least three years, and it doesn't appear that Adobe has done much (if anything) about helping us on it. Like others in this thread, I am running Windows 7 and suddenly Extension Manager CS5.5 does not open. I have tried all of the tricks that others have suggested here and elsewhere, but nothing has helped. I do see that when Extension Manager runs, it does show as a running process in Task Manager, but there is no display. This happens whether Extension Manager is invoked standalone or from the Dreamweaver menu. Believing that the problem is a conflict with some other process, I used msconfig to load only basic services, and even that didn't help. I even removed CS5.5 and reinstalled CS4, and darn it if that's not working now either.

If anyone has any new ideas, I'd sure like to hear them. And, needless to say, if I come up with "my solution", I'll post it.

Thanks for the suggestion. Actually, disabling firebug is the first thing I tried. It didn't help. So I uninstalled it altogether. Still no go.

Hi there,

I have the same problem. The load bar gets to about 60% and it hangs. I have tried all suggestions above with no joy. Can anyone suggest another solution???? Most frustrating because I depend heavily on extensions

Having this same problem, I noticed when I launched Extension Manager and moused over the application in the task bar, it would should me the image of the app running (Windows 7). The behavior was just that I couldn't "see it" on the screen, and that made me suspicious about the window position.

Using the post information from Carl Sun, I opened the exman_uiPreferences.xml file and sure enough the entry for the x_position of the window had a minus - sign in front of it. I edited the entry to remove the minus sign, saved the file, launched Extension Manager, and voila problem solved. No idea if this is the same issue everyone else is experiencing or not...

Here's the steps I took:

1. Open XML file for editing

     C:\Users\<YourUserName>\AppData\Roaming\Adobe\Extension Manager CS5.5\Configuration\Extensions\exman_uiPreferences.xml

2. Check position entries for negative values

  <windowPosition_x>-946</windowPosition_x>

  <windowPosition_y>181</windowPosition_y>

3. Change negative value to positive and save.

4. Relaunch Extension Manager

Good luck and hope it helps!

Cheers,

Bill

NOTE to Adobe: Generally not a good idea to allow a negative value for a Windows position. (rolling eyes)

I never had FlashFirebug installed and had this issue occur to me, so I'm skeptical your software has anything to do with the problem. As noted in my post of Sep 27, 2012, my problem was a negative value in the X window position in the extension manager preferences file exman_uiPreferences.xml in my roaming profile.

I cannot say whether this was or was not the issue experienced by others. Good luck!

Cheers,

Bill