MultiTerm 2022 cannot open local database - Object reference not set to an instance of an object

Question

Installed MultiTerm 2022 [SR2 - 17.2.5.2838] as part of Trados 2022 [SR2], launched MultiTerm and try to open a local termbase, but receive the error message: Object reference not set to an instance of an object. 
 Tried the following: 
 - Fresh Start and reinstallation - did not solve anything. 
 - Removed products (Trados and MultiTerm) and removed ALL references / entries to SDL, Trados, MultiTerm from Registry. Reinstalled products - no change. 
 - Cannot contact RWS Support. Cannot log a case (installation issue). Cannot reach anyone at RWS concerning this installation issue. 
 If anyone can point me in the right direction, I'd be thankful. 
 Dieter

Lucian Botezatu · Answer

Dieter Waeltermann We will be pleased to help you with this problem so have logged a support case on your behalf. We do prioritise customers who have a support contract so please keep in mind it could take up to 48 hours, especially over a weekend, but rest assured we will contact you as soon as we can. You will be contacted at the email address used for this Community. Support Case Id : CS0006473.

Trados Portfolio > 2. Licensing and Installation

MultiTerm 2022 cannot open local database - Object reference not set to an instance of an object