Cannot create control usually caused by the followings:

1. UI is not registered - run Regacc.exe in runtime to see if it helps.

2. Database is not upgrade/activate properly - try to load Sample company and activate database to see if it is the cause.

3. User rights - run Sage 300 as administrator to see if it resolved the issue.

Cannot create control usually caused by the followings:

1. UI is not registered - run Regacc.exe in runtime to see if it helps.

2. Database is not upgrade/activate properly - try to load Sample company and activate database to see if it is the cause.

3. User rights - run Sage 300 as administrator to see if it resolved the issue.

Thanks. I will try this. The point is that this happens randomly.

If it happens randomly, then REGACC and Run as Administrator are not the issue.  Those only have to done once on a new install.  If you don't install a new version or service pack, then neither should be necessary again.