Judging from the picture 3ivx is still on your system.
You provided no system info. Which OS system are you using?
To repair permissions
(Tiger)
Save and/or quit your applications & doucuments
Go to Applications>Utilities Folder
Click Disk Utility
Click the Volumn (HD) that you want to check.
Click the Repair Disk Permissions button. (Don't worry about verifying)
At the bottom of window when the repairs have finished, you will see the “most important thing”:
Permission Repairs Complete
The previliges have been repaired or completed on the selected volumn.
Restart your computer (Optional).
**Same directions are also in the OS Mac Help Menu.**
Panther
See Knowledge Base Article:
http://docs.info.apple.com/article.html?artnum=106214 Using Disk Utility and fsck to resolve startup issues or perform disk maintenance
TIP-You should Repair Permissions & restart:
After installing and/or updating an OS (Operating System).
After installing software.
After burning sessions
===============
After doing the above & you still can bring up the 3ivx shown in your link (thank you for providing) then I suggest that you re-search your HD using Spotlight and Finder>File>Find. Also, manually check your Preferences folder - Home>Library>Preferences.
Use
3ivx as your search keyword for Spotlight & Find.
Another option: Post over at the
3ivx Discussion Forums
Good luck!