X1 Search - Desktop - Install stops (Windows 10)

Hi

After moving to a new PC, I try to reinstall X1 Search (Desktop version). No Service plan active.

Was on Win 7 before, now on Win 10.

I deregistered license on old PC, entered data on new install (was accepted)

Install ends in note "Unable to complete setup due to an unexpeted error. Please see logs for details."

When i restart X1, I am NOT asked to enter license key, so seemingly that data was accepted.


Questions:

1. in which folder can I find these "log files"? (the install folder is empty, also includes no hidden files)
2. Any known fixes to this type of behaviour?

THX!

Nico

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