Thunderbird Latest version Email Clients

Thunderbird Latest version Email Clients I have a problem with the default email client option the tick box to make Thunderbird the default client for email is ticked but shaded
could this be why my Picasa 3 tries to default to the dreaded outlook for emails - If so how do I fix it -
Didn't have any problems until recent updates

geek_prosper1, Jun 30, 4:22 pm

control panel, add/remove, access and defaults [i think?] have a poke around in there, tick and UNtick allow/DISallow

geek_0800xford, Jun 30, 4:33 pm