I am using UE4 both under Windows and Linux (arch 4.6.2) which I compile myself.
I am on UE4.12.3 on both sides.
When I try to open a project file in Linux that was saved under Windows, I get the following message:
This project was made with a different version of the Unreal Engine. Opening it with this version of the editor may prevent it opening with the original editor, and may lose data. We recommend you open a copy to avoid damaging the original.
For some reason EU4 Linux believes to be on another version (which I have not identified). Conversion works fine but every time I switch OS I need to convert.
Any idea why this is happening?