I use emacs 23.2.1 and auctex 11.85-1 in Debian 6 . When I preview ' $\{a_n \}$ ' , this simple formula , I get the following errors :
gs -dOutputFile\=\(_region_.prv/tmp5813419/pr1-1.png\) -q -dSAFER -dNOPAUSE > -DNOPLATFONTS -dPrinted -dTextAlphaBits\=4 -dGraphicsAlphaBits\=4 > -sDEVICE\=png16m -r155.52x155.384 > GS>{DELAYSAFER{.setsafe}if}stopped pop/.preview-BP > currentpagedevice/BeginPage get dup null eq{pop{pop}bind}if > def<</BeginPage{currentpagedevice/PageSize get dup 0 get 1 ne exch 1 get 1 > ne or{.preview-BP 0.184314 0.309804 0.309804 setrgbcolor clippath fill > 0.980392 0.921569 0.843137 setrgbcolor}{pop}ifelse}bind/PageSize[1 > 1]>>setpagedevice/preview-do{[count 3 roll save]3 1 roll dup length 0 > eq{pop}{setpagedevice}{ifelse .runandhide}stopped{handleerror quit}if aload > pop restore}bind def [(_region_.prv/tmp5813419/preview.ps)(r)file]aload > exch dup 0 setfileposition 21394()/SubFileDecode filter cvx .runandhide > aload pop dup dup 21394 setfileposition 137()/SubFileDecode filter > cvx<<>>preview-do > Error: /invalidfileaccess in --file-- > Operand stack: > --nostringval-- (_region_.prv/tmp5813419/preview.ps) (r) > Execution stack: > %interp_exit .runexec2 --nostringval-- --nostringval-- > --nostringval-- 2 %stopped_push --nostringval-- --nostringval-- > %loop_continue --nostringval-- --nostringval-- false 1 > %stopped_push .runexec2 --nostringval-- --nostringval-- > --nostringval-- 2 %stopped_push --nostringval-- > Dictionary stack: > --dict:1160/1684(ro)(G)-- --dict:0/20(G)-- --dict:72/200(L)-- > Current allocation mode is local > Last OS error: 2 > Current file position is 532 > GS<3> > What is the matter ? Thanks first of all !