Thank you for your message. Could you mind tell me did you Windows system user name containing any space character? We found that the Windows system user name with space character will cause problem when starting the Report Writer. This problem can be solved by creating another account without space characters in the user name. If this cannot solve your problem, could you mind send me the vp.log file to have a look? You can find the vp.log file inside the bin folder of the VP Suite. Please send it to rain@visual-paradigm.com directly. Thanks in advance!