Digital BW, The Print

This is cross-posted with the piezo list, - got no aswer yet, so 
here it comes again:

Fellows,
I just installed Windows XP with Piezo 5.1, than 
updated to 513 and the new paper profiles.
The Piezo plug-in showed up in PS with the supported printers 
(3000 and 1160). 
I could print through the Piezo driver several times, but than 
without having changed anything nothing happens if I hit the print 
box.
I deleted the piezo software and reinstalled it, same problem. 

Printing is no problem with the Epson driver.
Any suggestions appreceated.
Thanks 
Bernd