I'm having the "No ePub files were updated" problem with the new version, too, but I DID restart! I even tried uninstalling the plugin, restarting Calibre, reinstalling it, then restarting Calibre, and it still isn't working. I'm on OS X. Also, it seemed to save the selected options between the reinstall, so I'm wondering if the config file could be somehow messed up, but I'm not sure where that would be located so as to try removing it...
Here's the log from just trying to "update metadata" on a book:
Code:
calibre, version 0.9.5
ERROR: Modify ePub failed: No ePub files were updated
Modify ePubs
Logfile for book ID 671 (Monster Hunter International / Larry Correia)
671
Modifying: /var/folders/98/kywyffsj22nfpp_85r9f60v40000gn/T/calibre_0.9.5_tmp_pskkvE/5NUF75_modify_epub/671.epub
Updating metadata and cover
Parsing xml file: content.opf
Parsing xml file: toc.ncx
ePub not changed after 0.43 seconds