The 002 error is a problem with newer games as you said. Gamma launcher is an old launcher. Search for neogamma rev7. This is a backup launcher with a built in 002 fix. If you download the wad file of this, put it on your SD card in the wads folder, and install it thru wad manager by selecting it and hitting the plus button it will solve your problem. Wads are like .exe files on a PC that installs stuff. Hope this helps.
I would post a link to the wad but am on a blackberry. You should be able to find it pretty easy.