Update Manager never shows changes in update description (Awen)

Using Trisquel 3.5 Awen. Update Manager shows constantly the busy cursor when there are updates and never shows the changelog for any package. This seemed strange.

Then I found this tidbit in ./xsession-errors
Unhandled exception in thread started by bound method MyCache.get_news_and_changelog of UpdateManager.Core.MyCache.MyCache object at 0xa17f$
Traceback (most recent call last):
File "/usr/lib/python2.6/dist-packages/UpdateManager/Core/MyCache.py", line 212, in get_news_and_changelog
self.get_changelog(name)
File "/usr/lib/python2.6/dist-packages/UpdateManager/Core/MyCache.py", line 245, in get_changelog
"later.") % (srcpkg, srcver_epoch)
TypeError: not all arguments converted during string formatting


Sounds to me as if they're related. Maybe some python head could take a look at it.

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