Hi bano,
one year after you I am stucked with the same problem as you were
http://www.twainforum.org/viewtopic.php?t=4076
I want my camera to deliver “endless” amount of images, so that I set the XferCount to -1 (as you did) and always I get pendingXfers=0 (as you got :D) therefore I must go back to state 5 … it exactly same problem you discribed.
Is there any solution? Have you finished your project?
Please reply
Thanks