Problem with opening station

I created a station, saved it and later closed it, now when i am tryin to open it i get an error :
RobotStudio .NET exception: C0040702 : One or more files in the system directory is corrupt and cannot be used when launching a VC.
IRobVC.Launch()

Base exception: RobApiException
C0040702 : One or more files in the system directory is corrupt and cannot be used when launching a VC.
IRobVC.Launch()

I didnt changed the folders location or anything, how can i solve this?

And also yesterday i was able to upload .STP files into robotstudio but today this option is not possible anymore why is that?

Hello
Maybe you can recreate the system. Just copy your RAPID and configurations from the corrupted directory and load them into your new system. You should be able to add a controller from your new system into your old RobotStudio station.
About importing .stp, try with the 64 bit RobotStudio and make sure you have the CAD conversion licenses.

/Pavel