I too had been wondering how certain applications manage to register custom protocols that indeed belong to them as when compared to the usual http we all know. Now correct me if I am wrong but it seems to me that Custom protocols do work in any kind of Wine applications.
Hello there Joshua! I have to say I too am having the same issue. Although the installation went well, the error 3371 comes to be popping up every time I launch it. I have even tried uninstalling and reinstalling the app but to no avail. I?ll update if I come up with something.