pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-40818-1421_GERMAN_QUICK-STEP.ps) >>/Users/jc/w/tmp/Tune-40818-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/BostonCollection/1421_GERMAN_QUICK-STEP.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Form_40818.log 1088 Log file, useful mostly for debugging
Tune-40818-1421_GERMAN_QUICK-STEP.abc 2851 ABC music file with the extracted tune(s)
Tune-40818-1421_GERMAN_QUICK-STEP.ps 56116 PostScript
Tune-40818-1421_GERMAN_QUICK-STEP.txt 2851 Plain-text file with the extracted tune(s)
Tune-40818-get.log 9816 Log file, useful mostly for debugging
These files should be available for 24 hours.