I now consider this version to be in "Beta testing". It is intended to be fully useful on Windows, Linux and MacOS. I am aware of some problems on Windows and would appreciate feedback from non-Windows users, particularly on MacOS.
I would also like to hear from people with the V3 ROM as I only have a limited amount of test data (i.e. what I saved before upgrading).
The program includes a feature to check online for new versions once a day. I do recommend turning on this preference so you get to hear as soon as possible about fixes and updates.