Trying To Learn

When I try to use Paint.net, it gives me this message: Paint.net has encountered a problem and needs to close. How can I fix this? This is the only other information I have: Error Signature Event Type: clr2013 P1 paintdotnet.exe P2: 3.36.3158.38068 P3: 48b23e68 P4:mscorlib P5: 2.0.0.0 P6:471ebc5b P7: 3545 P8: 32 P9:system.io.filenotfoundexception