[n4s]

Thank you all for the shared info.

It wasn't easy to install because of errors and issues, but all the needed info is in the thread.

In my case I needed the ETK8_2018-V1_CORRECTION-INT.EXE and copying the folders to get 8.1 (including the POI changes in the ini filles)

I also had some errors during the updates, after 8.1, and program would not start anymore.
I could solve it by doing a copy from "C:\ETKA\PROG\IX\PROG\" to "C:\ETKA\PROG1\" and "C:\ETKA\PROG2\"