...
TeX Output exited as expected with code 1 at Mon May 13 20:01:20
Running `Preview-PDF2DSC' with ``pdf2dsc _region_.pdf _region_.prv/tmpQWkzKT/preview.dsc''

Preview-PDF2DSC killed at Mon May 13 20:01:20
LaTeX: Wrong type argument: number-or-marker-p, nil

Debugger entered--Lisp error: (wrong-type-argument number-or-marker-p nil)
  signal(wrong-type-argument (number-or-marker-p nil))
  preview-reraise-error(#<process Preview-LaTeX>)
  preview-TeX-inline-sentinel(#<process Preview-LaTeX> "Preview-LaTeX")
  TeX-command-sentinel(#<process Preview-LaTeX> "exited abnormally with code 1n")