Having upgraded to 14.0.2, I'm now unable to launch pdf-tools as the default viewer. The error is:

"TeX-command-expand: Wrong type argument: stringp, nil"

Emacs : GNU Emacs 29.2 (build 2, x86_64-w64-mingw32)
of 2024-01-18
Package: 14.0.2

Yours,

Sandy