Hi Phil,
Thank you for pointing this out!
I've cleared the c:\users\yourusername\.lilypond-fonts.cache-2 file and now everything seems ok:
\version "2.18.2" { c }
Starting lilypond-windows.exe 2.18.2 [Untitled]...
Processing `c:/users/pierre/appdata/local/temp/frescobaldi-w66wjy/tmprmqi2o/
document.ly'
Parsing...
Interpreting music...
Preprocessing graphical objects...
Finding the ideal number of pages...
Fitting music on 1 page...
Drawing systems...
Layout output to `
document.ps'...
Converting to `./document.pdf'...
Success: compilation successfully completed
Completed successfully in 1.0".
\version "2.19.47" { c }
Starting lilypond-windows.exe 2.19.47 [Untitled]...
Processing `c:/users/pierre/appdata/local/temp/frescobaldi-w66wjy/tmprmqi2o/
document.ly'
Parsing...
Interpreting music...
Preprocessing graphical objects...
Finding the ideal number of pages...
Fitting music on 1 page...
Drawing systems...
Layout output to `./tmp-lilypond-UzOPf4'...
Converting to `document.pdf'...
Deleting `./tmp-lilypond-UzOPf4'...
Success: compilation successfully completed
Completed successfully in 0.8".