The app.lock.db is a lock file used by Jet Profilers internal database. It might be locked by a stale process, or it might have gotten the wrong file permissions. Are you using multiple users/logins on your machine? Please try the following:
* restart your computer (to make sure no stale Jet Profiler process is holding the lock) * delete the file app.lock.db
In the 0.9.12, the problem still exists. However, I found out that the problem only occurred, when the executable is started from the shortcut on my desktop. When started from a tool like totalcommander (behaving like an admin), it works. So perhaps it has something to do with the rights (when working under vista).
I don't see any lock file, so it must be, when the program wants to create the file.
Marcelloh, thanks for letting us know about this bug.
Vista treats application and user data differently from other os:es. Maybe it doesn't like when user data is stored with the application (under Program Files). In that case, we'll have to change the location to the user's directory.
We'll try to fix this and make a new release within a few days, if possible.
A fix for this has been released. As of v1.0.0 the application will run as administrator automatically. This allows it to access the necessary files in a consistent way and perform software updates.