Error opening the Composite Application Editor

If I create a new Composite Application and try to edit it with the Composite Application Editor I get the following error:“CLFRI0024E: Severe error occurred while opening Composite Application Editor”

In 8.0.2 we created several Comp Apps. All work fine in 8.5 but I can’t open them in the Comp App Editor to modify them. Every time the same error.

Any ideas?

Subject: Solved via reinstall

I solved the problem with uninstall Notes 8.5, deleting workspace directory and reinstall Notes 8.5