If you receive the error "A different version of Lasergene is running" when you try to launch a Lasergene application, but another version of Lasergene actually isn't running, there may be a lingering .state file from another version that needs to be deleted.
The solution is to locate and delete files named STARDM*.state, …where ‘*’ represents the version number.
These files may exist in the following directories:
Macintosh:
•Hard Drive:Library:Preferences:DNASTAR:DataManager
•Hard Drive:Users:username:Library:Preferences:DNASTAR:DataManager
Windows 7 and Windows 8:
•C:\Users\username\AppData\Local\DNASTAR\DataManager
•C:\ProgramData\DNASTAR\DataManager
If you find any of the .state files listed above, delete them. Once the files are deleted, the error should no longer appear.