in Juice 2.2 (and ipodder 2.1)
In File, Preferences, Advanced,
This doesn't work (quotes as seen here)
"D:\Data\myusername\Program Files\Juice\QI.bat" "%f"
You get a vague error message in the log.
This does work (quotes as seen here)
...so either the quotes screw up juice, or the spaces in the file path do.