Setting account trouble

Hi,

I migrated recently from portable Thunderbird by Framakey (Let's call it A) to the same by PortableApps ( as B).
The only way I found to keep my profile was to copy the whole previous profile folder from A to the profile location in B.
I now run B fine, except that I'm unable to set new user account. I can open the Account settings, but cannot validate my choices (the OK button doesn't answer, but the cancel is OK) and therefore set any new account or changes to previous account.

Does anyone has any idea how to solve the problem, or meet the same problem.
Thanks to all.