pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6881-StockportAssembly.ps) >>/Users/jc/w/tmp/Tune-6881-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/england/StockportAssembly.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_68812.log 1188270 Log file, useful mostly for debugging
Coll_68813.log 247800 Log file, useful mostly for debugging
Coll_68816.log 505437 Log file, useful mostly for debugging
Form_68813.log 809 Log file, useful mostly for debugging
Tune-6881-StockportAssembly.abc 1100 ABC music file with the extracted tune(s)
Tune-6881-StockportAssembly.ps 38080 PostScript
Tune-6881-StockportAssembly.txt 1100 Plain-text file with the extracted tune(s)
Tune-6881-get.log 4508 Log file, useful mostly for debugging
Tune-68814-get.log 6087 Log file, useful mostly for debugging
Tune-68816-get.log 171592 Log file, useful mostly for debugging
Tune-68817-get.log 1352 Log file, useful mostly for debugging
These files should be available for 24 hours.