FC3 and thunderbird

[Hans Müller]

Hello, when i try to open a hyper link in a mail or in the themes menu of Thunderbird, i get the error:
"Error showing url: There was an error launching the default action command associated with this 
location"

So what must i do that a can open web pages via thunderbird at mozilla?
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 894 bytes
Desc: OpenPGP digital signature
URL: <http://listman.redhat.com/archives/fedora-list/attachments/20050314/cf9c53ff/attachment-0001.sig>