Hi Mariusz, so for the next v4 beta I've added some additional ways for specifying the path to the license key file.

The path to the license key file (named moi_v2_license.key, moi_v3_license.key, etc...) can be passed as a command-line parameter to MoI.exe (put " " around it if there any spaces in the path) or also set as an environment variable like moi_v3_license.key=path .

- Michael