After a lot of successful migrations to the latest version of HCL Domino and HCL Traveler I could see that – although you already received the information that everything finished successfully – you weren’t able to remove the install directory ( only on Windows systems ).

I then took a look at the Task Manager and could see the following task:

This task is probably doing some “after work stuff” and removing extracted files, clearing temporary files, ….

So if you’re migrating a Domino Server and afterwards you want to install a language pack or upgrade your traveler just wait until this task “remove.exe” has finished.