Originally posted by skitterz
Sometimes when I try installing more mods or whatever to minecraft.jar, I get this:
You must login or register to view this content.. I have minecraft closed and all that. My only guess at it is javaw.exe being a problem, but it doesn't even end when you tell it to in the task manager:black:
I would used to get the same problem, be sure that when you download the mod to extract ALL the files out of the .zip file into a folder, then move them to your .jar file.
It happened because you opened the .zip file and opened the folder you needed then closed the .zip file and left the folder open to use which will not work.