Hi jgowing,
Many thanks for your investigation. I've been looking into the problem for the last few hours and I think I found the cause. A code fix is attached to this message. Please give it a try and let us know if it solves the problem.
The zip should be installed over Opus 9.1.1.8 only. (It hasn't been tested with earlier versions and may not work with them. Future versions of Opus should contain the fix already.)
Fix download:
[ul][li] Opus9118wmvfix.zip (PGP signature) 386KB[/li][/ul]
How to install:
[ul][li]Type /home/viewers into the Location field in Opus to go to your viewers directory.
[/li]
[li]Rename movie.dll to movie.old
[/li]
[li]Rename wma.dll to wma.old
(Note: It is important that the old files no longer have a .dll extension. Other than that, call them whatever you want.)
[/li]
[li]Unpack the attached zip file and go into the 32bit or 64bit folder, depending on your version of Windows/Opus.
[/li]
[li]Copy the replacement movie.dll and wma.dll into your Opus viewers directory.
[/li]
[li]Exit and restart Opus[/li][/ul]After restarting Opus you should be able to delete the two .old files but it might be worth keeping them just in case you need to revert back to them for some reason.
What's in the fix:
[ul][li] Your issue with WMV thumbnail threads not exiting properly.
[/li]
[li] Another issue I noticed where certain uncommon WMV variants would sometimes take a very long time to thumbnail.[/li][/ul]