[texhax] bug report!?

[llwaeva at 21cn.com]

Hi there,
  I am using psmatrix, \ncline and \ncbar to write a flowchart. However,
I found that if I set the linestyle as dashed, error occurs. 

Error: /typecheck in add
Operand stack:
   --nostringval--   PermitFileReading   --nostringval--   z   PermitFileWriting   --nostringval--
Execution stack:
   %interp_exit   .runexec2   --nostringval--   --nostringval--   --nostringval--   2   %stopped_push   --nostringval--   --nostringval--   --nostringval--   false   1   %stopped_push   1   3   %oparray_pop   1   3   %oparray_pop   1   3   %oparray_pop   1   3   %oparray_pop   .runexec2   --nostringval--   --nostringval--   --nostringval--   2   %stopped_push   --nostringval--   --nostringval--
Dictionary stack:
   --dict:1125/1686(ro)(G)--   --dict:0/20(G)--   --dict:73/200(L)--   --dict:95/300(L)--   --dict:98/200(L)--
Current allocation mode is local
MiKTeX GPL Ghostscript 8.15: Unrecoverable error, exit code 1