pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-308-tunebook.ps) >>/Users/jc/w/tmp/Tune-308-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/tunebook.org.uk/tunebook.abc

Error exit status 256; here are some files to check:

[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Coll_30810.log 284849 Log file, useful mostly for debugging
Coll_30813.log 250099 Log file, useful mostly for debugging
Coll_30814.log 64454 Log file, useful mostly for debugging
Coll_3082.log 64454 Log file, useful mostly for debugging
Coll_30826.log 65264 Log file, useful mostly for debugging
Coll_30837.log 322623 Log file, useful mostly for debugging
Coll_3085.log 65804 Log file, useful mostly for debugging
Coll_30850.log 66344 Log file, useful mostly for debugging
Coll_30859.log 134848 Log file, useful mostly for debugging
Coll_30860.log 519658 Log file, useful mostly for debugging
Coll_30870.log 66614 Log file, useful mostly for debugging
Coll_30881.log 66884 Log file, useful mostly for debugging
Coll_30885.log 258439 Log file, useful mostly for debugging
Coll_30896.log 70934 Log file, useful mostly for debugging
Find_30822.log 1185 Log file, useful mostly for debugging
Form_30804.log 754 Log file, useful mostly for debugging
Form_3081.log 745 Log file, useful mostly for debugging
Form_30840.log 767 Log file, useful mostly for debugging
Form_30875.log 755 Log file, useful mostly for debugging
Form_30884.log 875 Log file, useful mostly for debugging
Tune-308-get.log 4251 Log file, useful mostly for debugging
Tune-308-tunebook.abc 374 ABC music file with the extracted tune(s)
Tune-308-tunebook.ps 34061 PostScript
Tune-308-tunebook.txt 374 Plain-text file with the extracted tune(s)
Tune-30804-get.log 1702 Log file, useful mostly for debugging
Tune-30809-get.log 1599 Log file, useful mostly for debugging
Tune-3081-get.log 1544 Log file, useful mostly for debugging
Tune-30836-get.log 1451 Log file, useful mostly for debugging
Tune-30848-get.log 1545 Log file, useful mostly for debugging
Tune-30852-get.log 1593 Log file, useful mostly for debugging
Tune-30871-get.log 1451 Log file, useful mostly for debugging
Tune-30880-get.log 1670 Log file, useful mostly for debugging
Tune-30892-get.log 1429 Log file, useful mostly for debugging
These files should be available for 24 hours.