Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Gow4/CSRHW-abc2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6826-CSRHW-abc2.ps) >>/Users/jc/w/tmp/Tune-6826-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Gow4/CSRHW-abc2.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Find_68265.log 1459 Log file, useful mostly for debugging
Form_68264.log 907 Log file, useful mostly for debugging
Tune-6826-CSRHW-abc2.abc 147 ABC music file with the extracted tune(s)
Tune-6826-CSRHW-abc2.ps 6 PostScript
Tune-6826-CSRHW-abc2.txt 147 Plain-text file with the extracted tune(s)
Tune-6826-get.log 4066 Log file, useful mostly for debugging
Tune-68266-21151_Gamblers_Sett_tune_4.abc 1183 ABC music file with the extracted tune(s)
Tune-68266-21151_Gamblers_Sett_tune_4.txt 1183 Plain-text file with the extracted tune(s)
Tune-68266-get.log 8066 Log file, useful mostly for debugging
Tune-68267-Landrin_Potpourri.abc 154 ABC music file with the extracted tune(s)
Tune-68267-Landrin_Potpourri.pdf 2217 Portable Data Format
Tune-68267-Landrin_Potpourri.ps 6 PostScript
Tune-68267-Landrin_Potpourri.txt 154 Plain-text file with the extracted tune(s)
Tune-68267-get.log 5087 Log file, useful mostly for debugging
These files should be available for 24 hours.