Dataease 8.5 Error code 400 getting record invalid form handle

I'm getting this error a lot does anyone know what is causing it?

I've has some issues with duplicate form names and it seems to have started from there. 

Are there any good tools for cleaning up corrupt form files ?

Thanks

Kevin

Any DataEase page (Form/Report/DQL) is based upon a Multiview, which is an advanced ad-hoc generated join of all the columns in all the tables referenced in a page.

This multi-view can become "corrupt" for a number of reasons, so the Multiview is unable to generate the join.

In you case it might be that it reference the wrong Table Definition when trying to generate the multiview.

You can get rid of the double set of tables by deleting them in the catalogue but as both will be deleted at the same time, save the "working" one with a new name, copy data and relationships, delete the duplicate tables and save the copy back to the original name.