I realize questions along this line have been answered before, but I couldn't an answer that worked for me. My setup:
- Windows 7
- emacs 25.3 - the GNU windows build (not Xwindows, not cygwin)
- cygwin used for unix toolchain in Emacs, e.g. grep (not MinGW)
- MikTex 2.9 for LaTeX - fresh install from scratch yesterday (long story)
I have a short .tex file, with a few math expressions which AUCTeX preview should generate images for. From Emacs, I can compile the file (i.e. run pdflatex) no problem. When I make previews for buffer, latex runs fine, but then I get:
Transcript written on _region_.log. TeX Output exited as expected with code 1 at Mon Jun 4 06:46:49 LaTeX: LaTeX found no preview images
And no previews appear.
So - any thoughts, or advice for how to diagnose this?