I installed version 1.4.1 of MP3-jPlayer using Subversion, but WP's admin panel thinks that I have version 1.3.1 and is telling me to upgrade.
Specifically, I added this line to svn:externals:
Then I ran SVN update, and it fetched and installed MP3-jPlayer just fine. When I look in the plugin's directory, the readme.txt shows that it's version 1.4.1.
But WP's admin panel thinks that it's version 1.3.1 and is telling me that an upgrade is available.
This is a brand-spanking-new installation of WP, and I have never installed any other version of the plugin, so something is going wrong in how mp3-jPlayer is reporting its version number to the WP admin panel.
For now, I'm ignoring the admin panel's warning, since I do have the latest version of the plugin, but it would be nice not to get this error message.
(Note: I don't think I'm doing anything wrong using Subversion. I was able to update Akismet with no problem, and the WP admin panel sees its correct version number.)