after months of using this Jaksta install without a single problem, suddenly and out of the blue during recording, Jaksta's main windows only displays a big red x where the recordings are normally listed. Also the message "A generic error occured in GDI+" appeared.
Restarting Jaksta didn't help. Clearing my temp folder didn't help, Rebooting the system didn't help and upgrading Jaksta to the latest version didn't help either.
Also there's still that little preview pic showing on the lower left side. It shouldn't be showing after deleting the temp files. I guess it has something to do with the problem.
I was able to find the cause and solution myself.
Deleting the files (not the folders) in "X:\Users\Username\AppData\Roaming\Jaksta Media Recorder 7\Library" fixed it.