QTR-Quadtone RIP

Hi,

I have a strange and intermittent problem when printing several 
letter-size prints at a time on my Epson 2200. I'm using version 
2.518 currently (Win XP Pro, SP 2). 

Today I copied about 15 tiffs into the folder that QTRGui is 
monitoring. All of these were sized in Photoshop (CS3) to 7.5 x 
10" (at 360 dpi), mostly landscape and a couple of portraits. Paper 
size was set to "letter", "centered" was checked, and scale was set 
to 100%.

The first half-dozen printed fine, and then suddenly the next couple 
printed only about 2/3rds, squeezed down to the lower left corner. I 
halted the print queue at that point, wondering what was wrong.

I then noticed that in QTRGui the print size had changed from 
"letter" to "A7", spontaneously, with no intervention from me! I then 
set it back to "letter" and reloaded the bad images and the ones that 
hadn't printed yet, and they all came out just fine.

I wouldn't even bother posting this except that this is the third 
time this has happened recently. The other two times were on prints 
from CS2. The designated print sizes are correct, but if I spool 
several prints at a time, something seems to change the paper size on 
me.

Anybody else have this happen? Is there any way I can "lock" in the 
settings so it won't change when I'm not looking?

Eric M.