What is happening is there is not enough space to install everything you have selected in your NLITE version of XP.
Two ways to fix it:
Buy a larger flash drive with more space
use NLITE to trim out more things. Your list should not include Media Center, Keyboard drivers for other languages, drivers for tons of hardware you will never have (many printers, modems, etc.). Delete those crappy stock sound files and use your own. Remove Media Player 9 and just use the stock MS Media Player and then add the K-LITE codecs - smaller, faster and more types of files played. Turn off the paging file - compress the drive - lots of tricks like this mentioned elsewhere in this forum.
Just delete that crap from XP with NLITE and you will have it trimmed down to fit on a 512mb drive with 200mb left over.
Another complex method of getting extra space on these is do a split install of XP using the compact flash card to hold portions of XP. Of course, you will not be able to remove the card since the OS will crash if you do. It does offer an option to gain space. NLITE allows for the split install or multi-drive install of XP. Like I said, it's complex as it makes the CF card "C:" and the internal flash will be "D:". No problems booting XP this way.
Your tablet was designed to run Windows CE so it will be limited with XP but it will work.
For ANDROID, check the forum for notes and links to ANDROID X86 - no touch screen drivers available for DROID so it's a dead end for me.
Puppy Linux V4.31 seems to work well and there are touch drivers for it too.
New images of Debian have recently been uploaded here.
I'm more of a windows guy so I use XP trimmed down with NLITE. Drivers for your GX model are here:https://skydrive.live.com/?cid=50effd7a ... BBC481!144