pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-15800-cresc.ps) >>/Users/jc/w/tmp/Tune-15800-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/WilliamCampbell/10thBook/cresc.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Tune-15800-Goulding_SSEIFA_v1.abc 153 ABC music file with the extracted tune(s)
Tune-15800-Goulding_SSEIFA_v1.pdf 2217 Portable Data Format
Tune-15800-Goulding_SSEIFA_v1.ps 6 PostScript
Tune-15800-Goulding_SSEIFA_v1.txt 153 Plain-text file with the extracted tune(s)
Tune-15800-cresc.abc 36 ABC music file with the extracted tune(s)
Tune-15800-cresc.ps 6 PostScript
Tune-15800-cresc.txt 36 Plain-text file with the extracted tune(s)
Tune-15800-get.log 10571 Log file, useful mostly for debugging
These files should be available for 24 hours.