I get an error regarding OLE Server or ActiveX Control. What can I do?

When starting the Tradumanager, you see the following error message:

"The expression On Click you entered as the event property setting produced the following error: A problem occurred while Tradumanager was communicating with the OLE Server or ActiveX Control."

Solution:

Change the system locale to German.

How to do it and more info at https://www.java.com/en/download/help/locale.xml