Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1758/JohnTreat_GftF1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6138-JohnTreat_GftF1.ps) >>/Users/jc/w/tmp/Tune-6138-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1758/JohnTreat_GftF1.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Form_61389.log 998 Log file, useful mostly for debugging
Tune-6138-JohnTreat_GftF1.abc 152 ABC music file with the extracted tune(s)
Tune-6138-JohnTreat_GftF1.ps 6 PostScript
Tune-6138-JohnTreat_GftF1.txt 152 Plain-text file with the extracted tune(s)
Tune-6138-get.log 4169 Log file, useful mostly for debugging
Tune-61382-get.log 5365 Log file, useful mostly for debugging
Tune-61383-get.log 1401 Log file, useful mostly for debugging
Tune-61386-Gow-CSR3-abc2.abc 150 ABC music file with the extracted tune(s)
Tune-61386-Gow-CSR3-abc2.pdf 2217 Portable Data Format
Tune-61386-Gow-CSR3-abc2.ps 6 PostScript
Tune-61386-Gow-CSR3-abc2.txt 150 Plain-text file with the extracted tune(s)
Tune-61386-get.log 4971 Log file, useful mostly for debugging
Tune-61387-get.log 11194 Log file, useful mostly for debugging
Tune-61388-CSRHW-abc1.abc 147 ABC music file with the extracted tune(s)
Tune-61388-CSRHW-abc1.txt 147 Plain-text file with the extracted tune(s)
Tune-61388-get.log 3182 Log file, useful mostly for debugging
Tune-61389-041_Chain_Cotillion-001.svg 14053 Scalable Vector Graphics format
Tune-61389-041_Chain_Cotillion.abc 653 ABC music file with the extracted tune(s)
Tune-61389-041_Chain_Cotillion.txt 653 Plain-text file with the extracted tune(s)
Tune-61389-get.log 4325 Log file, useful mostly for debugging
These files should be available for 24 hours.