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Here's a backtrace of the crash in 0725: Program received signal SIGSEGV, Segmentation fault. 0x00002ba69bf3ada4 in fwrite () from /lib64/libc.so.6 (gdb) bt #0 0x00002ba69bf3ada4 in fwrite () from /lib64/libc.so.6 #1 0x0000000000452075 in closefilesandterminate () at pdftex3.c:6395 #2 0x0000000000410d59 in mainbody () at pdftexini.c:5649 #3 0x000000000045dc1e in main (ac=<value optimized out>, av=<value optimized out>) at pdftexextra.c:340 (gdb) list 6390 decr ( k ) ; 6391 } 6392 if ( dvilimit == halfbuf ) 6393 writedvi ( halfbuf , dvibufsize - 1 ) ; 6394 if ( dviptr > 0 ) 6395 writedvi ( 0 , dviptr - 1 ) ; 6396 printnl ( 971 ) ; 6397 printfilename ( 0 , outputfilename , 0 ) ; 6398 print ( 285 ) ; 6399 printint ( totalpages ) ; Obviously the change of \pdfoutput confuses pdfTeX. Best Martin