pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9594-Polka1_B.ps) >>/Users/jc/w/tmp/Tune-9594-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/KC/Polka1_B.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-9594-Polka1_B.abc 1431 ABC music file with the extracted tune(s)
Tune-9594-Polka1_B.ps 46630 PostScript
Tune-9594-Polka1_B.txt 1431 Plain-text file with the extracted tune(s)
Tune-9594-get.log 4262 Log file, useful mostly for debugging
Tune-95940-get.log 3286 Log file, useful mostly for debugging
Tune-95941-get.log 16004 Log file, useful mostly for debugging
Tune-95945-012_Blackett_o_Wylam.abc 281 ABC music file with the extracted tune(s)
Tune-95945-012_Blackett_o_Wylam.ps 32407 PostScript
Tune-95945-012_Blackett_o_Wylam.txt 281 Plain-text file with the extracted tune(s)
Tune-95945-get.log 4840 Log file, useful mostly for debugging
Tune-95949-027_Go_to_Berwick_Johnnie.abc 428 ABC music file with the extracted tune(s)
Tune-95949-027_Go_to_Berwick_Johnnie.pdf 12844 Portable Data Format
Tune-95949-027_Go_to_Berwick_Johnnie.ps 33541 PostScript
Tune-95949-027_Go_to_Berwick_Johnnie.txt 428 Plain-text file with the extracted tune(s)
Tune-95949-get.log 5862 Log file, useful mostly for debugging
These files should be available for 24 hours.