Can't print PDF

Binary package hint: cupsys

http://www.berlin.de/landesverwaltungsamt/download/beihilfe/online/lvwa_vb_1_online.pdf
has a PDF that needs to be filled out with Acrobat Reader.
Now here's the catch:

1) if I download the PDF and print it directly (via "lpr lvwa_vb_1_online.pdf"), then it prints OK
2) Once I use it the intended way (open Acrobat Reader 7.x or 8.x), fill in some data, and then click on print -- it won't print.

I bumped up the loglevel in cups, just to find an odd error:

D [23/Sep/2007:13:34:12 +0200] [Job 38] renderer command: gs -q -dBATCH -dPARANOIDSAFER -dQUIET -dNOPAUSE -sDEVICE=ijs -sIjsServer=hpijs -sDevic
eManufacturer="HEWLETT-PACKARD" -sDeviceModel="deskjet 6122" -dDEVICEWIDTHPOINTS=595 -dDEVICEHEIGHTPOINTS=842 -dDuplex=true -dTumble=false -r300
 -sIjsParams=Quality:Quality=1,Quality:ColorMode=0,Quality:MediaType=0,Quality:PenSet=2,PS:MediaPosition=7 -dIjsUseOutputFD -sOutputFile=- -
D [23/Sep/2007:13:34:13 +0200] [Job 38] foomatic-gswrapper: gs '-sstdout=%stderr' '-dBATCH' '-dPARANOIDSAFER' '-dQUIET' '-dNOPAUSE' '-sDEVICE=ij
s' '-sIjsServer=hpijs' '-sDeviceManufacturer=HEWLETT-PACKARD' '-sDeviceModel=deskjet 6122' '-dDEVICEWIDTHPOINTS=595' '-dDEVICEHEIGHTPOINTS=842'
'-dDuplex=true' '-dTumble=false' '-r300' '-sIjsParams=Quality:Quality=1,Quality:ColorMode=0,Quality:MediaType=0,Quality:PenSet=2,PS:MediaPositio
n=7' '-dIjsUseOutputFD' '-sOutputFile=%stdout' '-'
D [23/Sep/2007:13:34:13 +0200] [Job 38] Error: /undefined in eartomark

The odd thing is that once I print to a file in acrobat and then run the renderer command above, I get:

grep the command from the log:
D [23/Sep/2007:13:44:43 +0200] [Job 44] renderer command: gs -q -dBATCH -dPARANOIDSAFER -dQUIET -dNOPAUSE -sDEVICE=ijs -sIjsServer=hpijs -sDeviceManufacturer="HEWLETT-PACKARD" -sDeviceModel="deskjet 6122" -dDEVICEWIDTHPOINTS=595 -dDEVICEHEIGHTPOINTS=842 -dDuplex=true -dTumble=false -r300 -sIjsParams=Quality:Quality=1,Quality:ColorMode=0,Quality:MediaType=0,Quality:PenSet=2,PS:MediaPosition=7 -dIjsUseOutputFD -sOutputFile=- -

run the command: # gs -q -dBATCH -dPARANOIDSAFER -dQUIET -dNOPAUSE -sDEVICE=ijs -sIjsServer=hpijs -sDeviceManufacturer="HEWLETT-PACKARD" -sDeviceModel="deskjet 6122" -dDEVICEWIDTHPOINTS=595 -dDEVICEHEIGHTPOINTS=842 -dDuplex=true -dTumble=false -r300 -sIjsParams=Quality:Quality=1,Quality:ColorMode=0,Quality:MediaType=0,Quality:PenSet=2,PS:MediaPosition=7 -dIjsUseOutputFD -sOutputFile=- /tmp/print.ps > out

Check exit status
# echo $?
0

WTF is going on? No errors! Somewhere between CUPS and the renderer command something must be changing the raw PS data.

A way to print the file is to SAVE the filled-out form as PDF and then use kpdf to print it.