QTR-Quadtone RIP

I posted this a couple months ago and got no reply, so I am giving it another try - does any one know what is the max MB one can use for a file and print with QTR.

Also I would also appreciate any thoughts on dpi and epson printers. I am doing 40x50" images on large sheets of Hahnemuhle etching papers.  I have found 240 DPI the minimum DPI to use on a file before I can see the edge start to degrade.  I have heard all sorts of things about the true native resolution of an epson printer - that it is really in the range of 360 dpi, I like to do small prints at 720   .. and believe that if I am at 360 for a 40x50" print  .. it is not going to get any better. I am trying to avoid resizing either by me or by a ghost in the machine.

I have scans that are 240dpi@40x50" 106MB  .. and they print without a problem.  I have scans at 382dpi @40x50 256 MB .. and they do not print  .. I am loath to resize  ... as I find each resize gives a slight degradation

so I am looking for the may file size for QTR, and if there is a sweet spot for DPI on an epson printer  .. I am using a 9800.

Again I use an older QTR QTR 2.6  

old post:

"A couple of times when I tried to print large prints with large files I found
... nothing happened .. after I pressed print.

Everything worked fine when I followed up with a smaller print and file size.

I am wondering what is the max file sixe I can print with QTR ??

is there a max print size??

I am using an older version of QTR ,, I subscribe to the philosophy of once I
get a system to work well .. I use it until something needs to be replaced and
then I do it all at once. I also wonder if later versions would allow for a
larger print."

thanks michael