Help: "Find invalid object, save will lost it. ..." by Block Edit

Since a few days I get this error message if I edit blocks in Rhino 7. It are project files which I used since weeks and never before I have seen this error. Is it a current Rhino issue or is it caused by the block edit plugin I installed?

-Micha

I tried to deinstall BlockEditNew, but I used the plugin installer for installation without to make a backup of the BlockEdit.rhp. So I can’t simple take the old one.

I renamed the BlockEdit.rhp file and started a repair per Rhino installation but finally the modified BlockEdit.rhp is back and the new Block Edit is still active.

How can I get back the old Rhino Block Edit?