hi
Just registered to post this - I can confirm for future reference that on my current version of Linux (Mint 10) the archive manager does indeed refuse to copy across 90% of the forge directory from the zip file to the jar file.
Sorry to resurrect, but hopefully this will be useful information for the next adamant user.
Also it works fine in Mint 12, which is why I've also spent half an hour trying to figure this out
Edit: For super extra useful reference, e.g. anyone googling the problem, it seems to work if you select all the class files with shift+end, thereby actually scrolling to the bottom of the list, then dragging.
