I spoke too soon.
C:\WINDOWS\system32>convert-ly C:\WINDOWS\system32>C:\"Program Files (x86)"\LilyPond\usr\bin\python.exe C:\"Program Files (x86)"\LilyPond\usr\bin\convert-ly.py C:\Program Files (x86)\LilyPond\usr\bin\python.exe: can't open file 'C:"Program': [Errno 22] Invalid argument C:\WINDOWS\system32> This did work first time but now another wonderful windows surprise. From: Peter Gentry <peter.gen...@sunscales.myzen.co.uk> Sent: 21 December 2019 12:02 To: Lilypond Users (lilypond-user@gnu.org) <lilypond-user@gnu.org> Cc: 'ksnor...@gmail.com' <ksnor...@gmail.com> Subject: convert-ly problems Thanks Knute However the problem for windows (as usual) is more difficult. In addition to the PATH I needed the following to set up the association. First get check the associated name of the python file type. In an admin command prompt run the following * assoc {Python} result "no association.." * * I created one Python="C:\Program Files (x86)\LilyPond\usr\bin\python.exe" "%1" Now I look in Default Apps and there is PYTHON SUCCESS! Now convert-ly.py works I could have use something Lily specific as the association PYTHONLILY say maybe I will later. I expect I will have to do something similar if I go back to PYTHON proper. Isn't Windows wonderful ???? Regards Peter