pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7276-Book_Vals.ps) >>/Users/jc/w/tmp/Tune-7276-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/scand/Book_Vals.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_72762.log 246396 Log file, useful mostly for debugging
Coll_72763.log 149900 Log file, useful mostly for debugging
Coll_72766.log 387150 Log file, useful mostly for debugging
Coll_72769.log 312430 Log file, useful mostly for debugging
Tune-7276-Book_Vals.abc 36693 ABC music file with the extracted tune(s)
Tune-7276-Book_Vals.ps 388412 PostScript
Tune-7276-Book_Vals.txt 36693 Plain-text file with the extracted tune(s)
Tune-7276-get.log 12388 Log file, useful mostly for debugging
Tune-72761-get.log 13850 Log file, useful mostly for debugging
Tune-72765-get.log 4481 Log file, useful mostly for debugging
Tune-72769-Contradiction_1503-A-32-5-001.eps 42795 Encapsulated PostScript, for inclusion in PS files, HTML pages, etc.
Tune-72769-Contradiction_1503-A-32-5.abc 814 ABC music file with the extracted tune(s)
Tune-72769-Contradiction_1503-A-32-5.txt 814 Plain-text file with the extracted tune(s)
Tune-72769-get.log 8105 Log file, useful mostly for debugging
These files should be available for 24 hours.