error with last debian package and konica minolta 2430

[Valette]

I'm under debian unstable and since last cups update i got the following error in log each print i try.
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I [01/Jul/2006:12:20:46 +0200] Adding start banner page "none" to job 7.
I [01/Jul/2006:12:20:46 +0200] Adding end banner page "none" to job 7.
I [01/Jul/2006:12:20:46 +0200] Job 7 queued on "Magicolor2430" by "guest".
I [01/Jul/2006:12:20:46 +0200] Started filter /usr/lib/cups/filter/pstops (PID 7778) for job 7.
I [01/Jul/2006:12:20:46 +0200] Started filter /usr/lib/cups/filter/pstoraster (PID 7779) for job 7.
I [01/Jul/2006:12:20:46 +0200] Started filter /usr/lib/cups/filter/rastertokm2430dl (PID 7780) for job 7.
I [01/Jul/2006:12:20:46 +0200] Started backend /usr/lib/cups/backend/http (PID 7781) for job 7.
I [01/Jul/2006:12:20:48 +0200] Started "/usr/lib/cups/cgi-bin/printers.cgi" (pid=7782)
I [01/Jul/2006:12:20:59 +0200] Started "/usr/lib/cups/cgi-bin/printers.cgi" (pid=7783)
I [01/Jul/2006:12:21:10 +0200] Started "/usr/lib/cups/cgi-bin/printers.cgi" (pid=7784)
E [01/Jul/2006:12:21:19 +0200] [Job 7] Print file was not accepted (client-error-document-format-not-supported)!
E [01/Jul/2006:12:21:19 +0200] PID 7781 (/usr/lib/cups/backend/http) stopped with status 1!
I [01/Jul/2006:12:21:19 +0200] Hint: Try setting the LogLevel to "debug" to find out more.
I [01/Jul/2006:12:21:19 +0200] [Job 7] Backend returned status 1 (failed)
I [01/Jul/2006:12:21:19 +0200] Saving printers.conf...
I [01/Jul/2006:12:21:21 +0200] Started "/usr/lib/cups/cgi-bin/printers.cgi" (pid=7785)
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the gui complain about paper size not supported but it is well known iso A4  and was working before update.