pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-43868-20722_Blacks_Quickstep.ps) >>/Users/jc/w/tmp/Tune-43868-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/EliasHowe/MusiciansCompanionP2/20722_Blacks_Quickstep.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.65 512x512 PNG]
filesizedescription
Find_43868.log 1487 Log file, useful mostly for debugging
Tune-43868-20722_Blacks_Quickstep.abc 672 ABC music file with the extracted tune(s)
Tune-43868-20722_Blacks_Quickstep.ps 35662 PostScript
Tune-43868-20722_Blacks_Quickstep.txt 672 Plain-text file with the extracted tune(s)
Tune-43868-24CountryDances_1809_Button_Whitaker.abc 173 ABC music file with the extracted tune(s)
Tune-43868-24CountryDances_1809_Button_Whitaker.pdf 2217 Portable Data Format
Tune-43868-24CountryDances_1809_Button_Whitaker.ps 6 PostScript
Tune-43868-24CountryDances_1809_Button_Whitaker.txt 173 Plain-text file with the extracted tune(s)
Tune-43868-get.log 21184 Log file, useful mostly for debugging
These files should be available for 24 hours.