Answer:
Delete the following files (administrator rights required) in the folder C:\Program Files\Common Files\Dlubal:
- DL_Bmpbtn.ocx
- DL_Caption.ocx
- DL_HtmlButton.ocx
- DL_HtmlStatic.ocx
- DL_Static.ocx
Delete the following files (administrator rights required) in the folder C:\Program Files\Common Files\Dlubal: