Hello,
I would first recommend ensuring all required dependency files are present and linked in the project.

See the KB:

https://gateway.sdl.com/apex/communityknowledge?articleName=000021657

If this does not help, the issue would require more help than available on the forum, and you should raise a support case.

Hi Adrian,

thank you very much for the quick response.

And yes, all required dlls are stored in a special folder set in the .NET Parser settings. And I was wrong, the problems occured after 2022 SP1 not after CU3. We still have some faults in the diagnostic reports but these are the same as before SP1 update. And before SP1 update everything works fine and the designer opens all dialogs correctly. Alter SP1 update Passolo requested a lot of additional dll files that I stored in this special folder. Before SP1 we didn't need these dlls - hmm. Stange.

 Could there be something wrong with my .Net Parser settings?

Hi Adrian,

thank you very much for the quick response.

And yes, all required dlls are stored in a special folder set in the .NET Parser settings. And I was wrong, the problems occured after 2022 SP1 not after CU3. We still have some faults in the diagnostic reports but these are the same as before SP1 update. And before SP1 update everything works fine and the designer opens all dialogs correctly. Alter SP1 update Passolo requested a lot of additional dll files that I stored in this special folder. Before SP1 we didn't need these dlls - hmm. Stange.

 Could there be something wrong with my .Net Parser settings?