Sorry for your pain. Unfortunately I don't believe the Forums can offer you any help. Sounds like you need to contact tech support. Good Luck.
This is probably better suited for our support team. In order to get a faster response time, send the following information to email@example.com:
1. Screenshot of the error message with the "Show Details" button clicked if available.
2. Tableau Desktop Logs:3. Any additional information about what was being done when this issue occurred.-Tracy