I did some testing with my gTablet that is running VEGAN GE. I discovered that if I install the latest version of the launcher (v1.6.2) the market will update to a newer version which then force closes every time you run it. The pattern (on the updated launcher) was... open market for the first time, it works, second time it has updated and FCs, go to Application and uninstall the updates for the Market app, open Market, Market works, close, re-open, Market has updated and FCs, lather, rinse, repeat. YMMV but I have read other posts where people have run into this same issue. I figured out that if you stay on the launcher that is bundled with GE, the Market will not update (at least not while I was testing last night for over an hour) and will continue to work. I did try swapping back to the bundled launcher but it seems the damage has already been done. I did not try uninstalling the 1.6.2 launcher, perhaps that might help. What I did do (since I was setting up a new gTablet anyway) was to boot into ClockworkMod, do a factory reset/wipe data, then reboot. Go through the setup as normal, just don't install the updated launcher. As I said, I tested the Market on the bundled launcher for over an hour, I closed and reopened the Market app and even rebooted a couple of times and it worked every time.