A "complete" list of changes cannot be posted. The original change-log was accidentally deleted in the past. If you scroll up some you will see a general list of changes.
And yes, you will not lose any skins you have installed previously. This mod is completely self contained in its own battlefield and will not affect any other theaters, battlefields, skins, sound packs, etc.
As for your registry problem. Be sure that the installer is pointing towards your falcon directory.