pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-950-RobertPurdie_TomThumb.ps) >>/Users/jc/w/tmp/Tune-950-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/RobertPurdie_TomThumb.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_95009.log 874953 Log file, useful mostly for debugging
Coll_95020.log 569545 Log file, useful mostly for debugging
Coll_95023.log 267469 Log file, useful mostly for debugging
Coll_95038.log 281519 Log file, useful mostly for debugging
Coll_95039.log 127969 Log file, useful mostly for debugging
Coll_95041.log 346150 Log file, useful mostly for debugging
Coll_95042.log 24675 Log file, useful mostly for debugging
Coll_95043.log 268875 Log file, useful mostly for debugging
Coll_95044.log 136356 Log file, useful mostly for debugging
Coll_95065.log 277304 Log file, useful mostly for debugging
Coll_9507.log 291354 Log file, useful mostly for debugging
Coll_9508.log 386895 Log file, useful mostly for debugging
Coll_95080.log 273089 Log file, useful mostly for debugging
Coll_95085.log 25476 Log file, useful mostly for debugging
Coll_95091.log 430313 Log file, useful mostly for debugging
Coll_95094.log 138291 Log file, useful mostly for debugging
Find_95002.log 1733 Log file, useful mostly for debugging
Find_95060.log 1646 Log file, useful mostly for debugging
Form_95020.log 1186 Log file, useful mostly for debugging
Tune-950-RobertPurdie_TomThumb.abc 5644 ABC music file with the extracted tune(s)
Tune-950-RobertPurdie_TomThumb.ps 66726 PostScript
Tune-950-RobertPurdie_TomThumb.txt 5644 Plain-text file with the extracted tune(s)
Tune-950-get.log 7399 Log file, useful mostly for debugging
Tune-9500-get.log 4939 Log file, useful mostly for debugging
Tune-95000-get.log 4363 Log file, useful mostly for debugging
Tune-95008-get.log 4258 Log file, useful mostly for debugging
Tune-95015-get.log 9379 Log file, useful mostly for debugging
Tune-95016-get.log 6245 Log file, useful mostly for debugging
Tune-95019-ShoemakersDance-001.svg 22638 Scalable Vector Graphics format
Tune-95019-ShoemakersDance.abc 594 ABC music file with the extracted tune(s)
Tune-95019-ShoemakersDance.txt 594 Plain-text file with the extracted tune(s)
Tune-95019-get.log 4668 Log file, useful mostly for debugging
Tune-95021-get.log 5493 Log file, useful mostly for debugging
Tune-95027-get.log 5589 Log file, useful mostly for debugging
Tune-95031-BrondumsHopsa-001.svg 15262 Scalable Vector Graphics format
Tune-95031-BrondumsHopsa.abc 490 ABC music file with the extracted tune(s)
Tune-95031-BrondumsHopsa.txt 490 Plain-text file with the extracted tune(s)
Tune-95031-get.log 4138 Log file, useful mostly for debugging
Tune-95034-get.log 1394 Log file, useful mostly for debugging
Tune-95039-get.log 4392 Log file, useful mostly for debugging
Tune-9504-get.log 3084 Log file, useful mostly for debugging
Tune-95049-get.log 3404 Log file, useful mostly for debugging
Tune-95050-get.log 9335 Log file, useful mostly for debugging
Tune-95058-get.log 4207 Log file, useful mostly for debugging
Tune-95061-get.log 1394 Log file, useful mostly for debugging
Tune-95062-get.log 5321 Log file, useful mostly for debugging
Tune-95063-Evelyns_Bourree_1.abc 291 ABC music file with the extracted tune(s)
Tune-95063-Evelyns_Bourree_1.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-95063-Evelyns_Bourree_1.ps 33551 PostScript
Tune-95063-Evelyns_Bourree_1.txt 291 Plain-text file with the extracted tune(s)
Tune-95063-get.log 11745 Log file, useful mostly for debugging
Tune-95064-get.log 5525 Log file, useful mostly for debugging
Tune-95070-get.log 6192 Log file, useful mostly for debugging
Tune-95074-George_Meikle.abc 48100 ABC music file with the extracted tune(s)
Tune-95074-George_Meikle.ps 411015 PostScript
Tune-95074-George_Meikle.txt 48100 Plain-text file with the extracted tune(s)
Tune-95074-get.log 32563 Log file, useful mostly for debugging
Tune-95076-get.log 1394 Log file, useful mostly for debugging
Tune-9508-get.log 5439 Log file, useful mostly for debugging
Tune-95081-get.log 6299 Log file, useful mostly for debugging
Tune-95088-Kohlers3.abc 162921 ABC music file with the extracted tune(s)
Tune-95088-Kohlers3.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-95088-Kohlers3.ps 395827 PostScript
Tune-95088-Kohlers3.txt 162921 Plain-text file with the extracted tune(s)
Tune-95088-get.log 131211 Log file, useful mostly for debugging
These files should be available for 24 hours.