Very common problem: pstoraster failed!

[regisr]

Hello!
I have CUPS 1.3.7
cups-pstoraster 8.15.4
ghostscript-gpl 8.62

and the very common error message
"/usr/local/libexec/cups/filter/pstoraster failed" (error 11 ...)
for my Epson R285. I can print in raw mode whith gimp + gutenprint ...

I have also a R2400 and the filter works fine.

I tried to reinstall all ports without success.
Where should have to check?

-- 
regisr <regisr at pobox.com>