Social Club Issues

"Rockstar... YOU DID IT AGAIN!"
"Sorry, boss..."

So, let me explain. I need some help with Grand Theft Auto V for PC, Steam version. What's the problem? It won't launch. Before you say something, yes, my personal computer's specs go above the minimum required, so no worries about it.

Something to know before I start explaining: I installed GTAV on an external HDD. I once installed GTAIV on the same ext HDD and it worked well... with some Windows Live Market whatever patches, of course. >_>

Steps I made:
> I finished installing it and then I tried playing the single player version to see how is it.
> The Social Club window appears to make me link my previous PS3 Social Club account and put the GTAV code to activate it, so I could play the game.
> The Social Club window tells me that GTAV is loading, then it disappears. I expect it to run... BUT(T)!
> The Social Club window appears again with a very annoying message: "Grand Theft Auto V has stopped working. Try launching the game again or try Safe Mode." or something like that. Not the Windows 8.1 window with a warning sound, just the Social Club window.
> I retry with normal launch, then with the Safe Mode. Nope.

I tried 2 solutions so far:
1 - Install the Social Club installer in the game directory
2 - Set the "run as administator" option on to the GTAVLauncher.exe
And since I'm lucky as much as Donald Duck in Disney comics, they didn't work

If someone knows about this issue, please, tell me as soon as possible!

EDIT: I know people don't like comments about how some people can't help them in their issues, so that's why I ask you.. please, if you know how to fix this, tell me. If you're here to say "I can't help you" or stuff like that, avoid doing so and get back doing what were you doing.