You can check if there are permission problems in the Sql Trace file.
In erwin Data Modeler go to Tools - Options. Go to the Diagnostics tab.
Check the box for SQL Trace and enter the location for the Trace File.
Reverse engineer.
Review the trace file.
Check for the query results. If the below error is in the file, this generally means the user id does not have permissions on certain tables.
ORA-00942: table or view does not exist
Grant the user required permissions and retest.