Thanks, that really helped. I didn't notice the stupid symbol, thinking that " ' " should work.
The freezing is happening to me as well, problem might be the missing optifine, but I couldn't get it to work, because of rotarycraft. That mod seems to do things "by it's own way", when building the modpack, I had to install it first, because even the ID-FIX didn't succesfully correct the ID's, which made the game crash - the mod seems to not take anything from an external mod (not written by ReikaKasseki).
So please be patient while loading, it usually takes about 1 - 4 mins. to load the