Postscript Errors with Toshiba eStudio 2500c

Greetings,

We had some problems printing to the Toshiba eStudio 2500c in our office after upgrading to Snow Leopard. I have read the threads about that and I do have their "latest" (3/09) drivers installed and the permissions set correctly. Adding the printer works, added as LPD by IP address and it finds the correct driver. Print jobs are sent successfully to the printer with no errors returned to the user.

Some things print just fine. Recent successes were printing a PDF and an Excel file. However, some things like printing from FileMaker or Firefox cause the printer to spit out a Postscript Error page instead of the document I tried to print. Here's what the page looks like:

ERROR : limitcheck
OFFENDING COMMAND : -- nostringval --
STACK :
/TSBPrivate
«
setpagedevice
»
(DSSC PRINT USERLOGIN=Dave)
/TSBPrivate
«
{pop dscInfo /For known {« /TSBPrivate 100 string dup a (
DSSC PRINT USERLOGIN=)putinterval dup 21 dscInfo /For get put interval »
setpagedevice }if dscInfo /Tit1e known {«/ITSBPrivate 100 string dup a
(DSSC JOB NAME=)putinterval dup 14 dscInfo /Title get put interval »
setpagedevice /if « /TSBPrivate (DSSC PRINT PRINTMODE=NORMAL)»
setpagedevice }
where
/dscInfo
-mark-

The best information I could gather still indicates that Toshiba has not released drivers for this model line that support Snow Leopard. However, a friend of mine had a fix for this (I think) and I can't remember what it was, nor can I reach him. So I'm wondering if anyone here has any suggestions or fixes for this problem.

Using the Generic Postscript Driver does work, but it's too limiting because we can't choose what tray to print from, etc. Thanks!

-Dave