Regarding your concerns,
Permissions can be found on the individual mod's pages, found on the Mod List page under Important Links. If you have any specific questions about any specific mod's permissions, please ask.
The reason for the update was due to a couple mods that I had accidently placed in this modpack that were not supposed to be in it, please redownload the modpack for it to be up to date.
I've also included a Mirror for both the Client and the Server versions, in case you have problems with the main download. (I don't know why you had issues, I had a few other people who were able to play it after downloading from the same link.)