Ah I found it! What do I change it back to?
The only option it comes u pwith is notepad.

I also realise I must sound quite dumb with all of this, sorry in advance.

a folder

Hi gang

I modded a Mclaren into my GTA 5, my first car mod so I tried downloading another car but now my rpf files only open in internet explorer and my computer cant find the right original file to open it back up with.

I have uninstalled and reinstalled the game to no help, redownloaded openIV and that didn't fix the problem.
I don't think I backed up my game files but all my mods are in my mods folder.

Any idea how to fix my rpf?