Can't pass Egosoft logo when start the game with some mods

[CommanderJoir]

I try to play with some ships mods but the only that works are in ext_01.cat/ext_01.at format. Any other mods that are in another format do not work, and some script mods I can get to work if i move them to documents.
I'm using win 8.1 and I'm good on the hardware for this game but only using 8 gb of ram. I install mods in extensions folder where the game is installed. Using steam version.
Is there something I can do to work around this or am I having though luck?

[CBJ]

I've moved this to the Scripts and Modding forum, where it's more likely to be seen by people who are involved with installing mods.