The code 22 (0x16, -234) I am getting has been seen before with 64 bit Linux. I will look into the suggestions at http://boincfaq.mundayweb.com/index.php?viewCat=5 when I get a chance (may be a week or two). I do have ia32-libs installed as that was a prerequisite for APP SDK v2.6. Thanks mmstick for your comments.