I get the same thing... except when I logged in and tried to choose Operating System my only choices were All, Windows, GP32, Mac, Linux, and Not BLU+ Compatible.
I finally got it to work by going into GP2X-Applications-Misc Applications THEN loging in and when I went into add file I got the choices in OSs for GP2XHH, GP2XLinux, Windows, etc.
I've been banging my head against the wall for over a month now over this... your suggestion pointed me in the right direction. Thanks,