The new exporter fires off LaTeX with an absolute path for the file to export. If you happen to use a native Emacs, but the LaTeX from Cygwin that will fail because it expects a POSIX path. Would it be possible to change things so that a relative path is used as in the old exporter (or better yet, start LaTeX in the correct working directory and don't use a path component at all)?
Regards, Achim. -- +<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+ SD adaptation for Waldorf microQ V2.22R2: http://Synth.Stromeko.net/Downloads.html#WaldorfSDada