Thunderbird won't launch (?)

Dear all,

I'm a noob; please be gentle.

I'm kind of new to portable apps and decided to give them a try. Installed Thunderbird Portable 3 in my pen drive and though it launches, syncs with Gmail and what not in the first attempt, after a second time it just won't launch.

Kindly note that I am running Windows 7. For some reason after I deleted the Thunderbird Portable folder (with my data included) and reinstall/sync everything it works... once. If I exit and attempt to launch it just won't start.

Thank you all for your suggestions. Ran a search already and couldn't find anything similar to my issue on the board.

For what is worth, I love Thunderbird and am fairly excited with the possibility of having it on a USB with all my Gmail emails, Google Calendar and Contacts.

Folivares.