Digital BW, The Print

HI

My Mac has been working fine until today. When I send a file to print 
the Epson print software stops the job. QTR printing works, so does 
printing a nozzle check from the Epson print utility. I have tried 
just about everything I can think of including the following:

1) Reinstalled Epson print driver.
2) Reinsatlled Mac OS X system software.
3) Tried printing with print sharing ON and OFF.
4) Tried turning both printer and computer OFF - restart.

I have even tried printing a different file with different driver 
settings. 

The problem is like QTR if you try to print at 2880 resolution - it 
won't. Job stops !!

Any ideas.

Peter