Juice renames the files after they're downloaded, looks to me like the program add a hash tag to the file.
Here is the file name during download: EP358_LikeaHawkinItsGyre.mp3.partial
Here is the file name after complete download: EP358_LikeaHawkinItsGyre_d13a76d516d9dec20c3d276ce028ed5089ab1ce3dae902ea1d01cc8234d2cd5f655f_c_id_4840714.mp3
Removing the extra characters is really a pain when you have a large number of files.
Using Juice 2.22 Portable on Windows XP SP3
Adding the "%n" in Advanced Options doesn't fix or change the file name.
From the log of a recent download:
Starting auto cleanup.
Finished auto cleanup.
Compacting the history file with a threshold of 60 days.
Last check completed at Sat Nov 07 21:11:15 2015
Pass #1: downloading feeds and looking for enclosures
Figuring out which feeds to scan...
We have one feed to scan.
Scanning...
Pass #1 ended with 79 enclosures discovered.
Pass #2: downloading enclosures...
Filtering 79 discovered enclosures...
1 enclosures need more work.
Downloading http://traffic.libsyn.com/escapepod/EP509_Broken.mp3
There was an error running this command: Escape Pod
Updating playlist Escape Pod with EP509_Broken_c_id_10191675_expiration_1446961776_hwt_3d0d32bfa489cfd9c50c86a600cbeb02.mp3
Pass #2 ended.
Starting auto cleanup.
Finished auto cleanup.
Compacting the history file with a threshold of 60 days.
Last check completed at Sat Nov 07 21:22:06 2015
I hope this helps to identify the problem.