Runtime error while loading

May 18, 2016 at 5:19 PM
After installation of the Tool no buttons appear on ribbon. Also at Option->Addons->COM-Add-Ins there is an information about some runtime error while loading ("Laufzeitfehler während des Ladens" in my German MS Office).

I am using an admin account, I have tried to turn off my antivirus and to reinstall both .NET Framework 3.5 Service Pack 1 and VSTO 3.0 Runtime Service Pack 1 downloaded from Microsoft Webpage, but it didn't help. Do you have any clues what to do?