on the technic launcher i cant play Hexxit, but i can play every other mod. what should i do?

[ZJ57]

it starts to load, but then the load bar just disappears. all other mod packs work perfectly fine. someone please help me. is there an update I could do, because I tried taking it off of my desktop but it just says its not allowed. thanks in advance

[ZJ57]

also the first day I played on it I think I accidentally hit a button that I didn't know about, and when I go into my inventory its just a regular inventory and I can t look up anything.

[Munaus]

also the first day I played on it I think I accidentally hit a button that I didn't know about, and when I go into my inventory its just a regular inventory and I can t look up anything.

That's NEI, when you have your inventory screen brought up, press o

As for your inital problem, post a bug report in Technic Launcher bug section with the proper info as launcher version, OS, java, antivirus and an error log.

Reading this link will help.