Question : In Oracle Designer, I'm getting this error.  RME-00207: Too many open activities (10 maximum).

It happens when I try to remove Table API/trigger logic entries from a table.  If I try to remove them one at a time, it still fails, but without the error message.  Oracle support is no help - anyone have any experience with this error?

Answer : In Oracle Designer, I'm getting this error.  RME-00207: Too many open activities (10 maximum).

This problem was related to permissions that had been revoked for the individual user.
Problem is now solved