Keep getting this error when trying to check back in existing PDF forms in Workbench. Once you get this error, you can't check any files back into Workbench. You have to Delete the PDFs out of Workbench and then insert them as new files.
Never received it before upgrading from ES3 to ES4. Any ideas would be helpful!
This is very generic exception you get. Can you please copy paste the full stack trace?