After the installation two days ago of SDLTradosStudio2021SR1_16.1.8.4404.

I am seeing the “Object reference not set to an instance of an object” error message when analyzing files (Batch task > Analyze file). It happens when analyzing MS Word, MS Power Point at least in a local project.

I have done many trials, and it seems this happens after I have merged segments in the source file, because the segementation was wrong (this is something I need to do for a proper maintenance of my internal translation memory). 

Could you please look into this? Let me know how I can help. 

Thanks in advance.