I want to know is it possible to open source the installer, so I may try to make a Linux port of it.
Or may you grand me the permission to port it to Linux? (Not guaranteed that I'm able to do it though
I could try to rewrite it in a different language.
Seems like Wine doesn't properly emulate GetDiskFreeSpaceEx Windows API function which I use.
I've encountered this kind of error long ago while trying to install something. I think it's already been fixed now.