Ghostscript generates an error when processing the attached PDF file using the tiffsep device:


GPL Ghostscript GIT PRERELEASE 9.06 (2012-02-08)
Copyright (C) 2010 Artifex Software, Inc.  All rights reserved.
This software comes with NO WARRANTY: see the file PUBLIC for details.
Processing pages 1 through 1.
Page 1
%%SeparationName: PANTONE 280 C
%%SeparationName: weiss
%%SeparationName: weiss2
%%SeparationName: PANTONE 268 C
%%SeparationName: PANTONE Process Cyan C
%%SeparationName: PANTONE Process Yellow C
%%SeparationName: PANTONE Rhodamine Red C
%%SeparationName: PANTONE Red 032 C
%%SeparationName: Stand
WARNING:  Non encodable pixels = 2287
Error: /rangecheck in --showpage--
Operand stack:
   1   true
Execution stack:
   %interp_exit   .runexec2   --nostringval--   --nostringval--   --nostringval--   2   %stopped_push   --nostringval--   --nostringval--   --nostringval--   false   1   %stopped_push   1894   1   3   %oparray_pop   1893   1   3   %oparray_pop   1877   1   3   %oparray_pop   --nostringval--   --nostringval--   2   1   1   --nostringval--   %for_pos_int_continue   --nostringval--   --nostringval--   1777   0   9   %oparray_pop   --nostringval--   --nostringval--
Dictionary stack:
   --dict:1156/1684(ro)(G)--   --dict:1/20(G)--   --dict:82/200(L)--   --dict:82/200(L)--   --dict:109/127(ro)(G)--   --dict:291/300(ro)(G)--   --dict:24/31(L)--   --dict:6/8(L)--   --dict:26/40(L)--
Current allocation mode is local
GPL Ghostscript GIT PRERELEASE 9.06: Unrecoverable error, exit code 1



The command line I'm using for testing:

  bin/gs sDEVICE=tiffsep -o test1.tif RBR1104559.pdf