Okay, nearly a month has passed, so maybe I should give an update on the situation.
1 month ago, my computer chrashed, so I haven't been able to work on this. My father and I took a look on it yesterday though. So now, my computer works somewhat. The CPU level is always up on 57% or something, but I can use the computer. Other from that, it pretty much works, but Im planning to fix a new computer soon.
RPGXP is up and running now, and the project works . The only thing I need to repair is 2 autotiles that I can fix in 3 seconds or something. Other from that, the project is alive again