No other GUI is running. Removing the cache didn't help. If I completely remove SQL Backup (including removing all registry settings) and reinstall SQL backup, the GUI starts up fine.
But when I'm changing the server cache location to a different directory (e.g. E:\SQL Server\Red Gate) the problems start again ... Simply removing the registry setting where the cache location is stored solves the problem. But that's not what I want.
The strange thing is that all my other servers work correctly. But those have been recently upgraded from version 6 (where the server cache was already set to a different location prior to upgading).
But when I'm changing the server cache location to a different directory (e.g. E:\SQL Server\Red Gate) the problems start again ... Simply removing the registry setting where the cache location is stored solves the problem. But that's not what I want.
The strange thing is that all my other servers work correctly. But those have been recently upgraded from version 6 (where the server cache was already set to a different location prior to upgading).