What's up with plugins and 0.15?

[Wichmann, Mats D]

My first look at 0.15 wasn't terribly positive...

Unable to load plugin 'bzr-tags' from '/home/mats/.bazaar/plugins': It
is not a valid python module name.
Unable to load plugin 'bzr-gtk' from '/home/mats/.bazaar/plugins': It is
not a valid python module name.
Unable to load plugin 'pqm-submit' from '/home/mats/.bazaar/plugins': It
is not a valid python module name.
Unable to load plugin 'update-mirrors' from
'/home/mats/.bazaar/plugins': It is not a valid python module name.

The other plugins in my home directory are not
saying this.

What's up with this?