Hello Manuel,
thank you for hint -> I did find 2 spots where ddl.xml was located. One of them contained this:
<Launch.Addon>
<Name>Ultimate Ground Crew X</Name>
<Disabled>False</Disabled>
<ManualLoad>False</ManualLoad>
<Path>.\Ultimate Ground Crew X\UGCX64.dll</Path>
<DllStartName>module_init</DllStartName>
<DllStopName>module_deinit</DllStopName>
</Launch.Addon>
So I copied that into other xml and it worked!
thank you for your time, please, consider this issue being fixed.
Marek