I have already read that topic. The problem is the same (the same error message that disappears if i log in) but the cause is different. I disinstalled old version of Tp (v0.9.8 ) and i installed v1.0 Beta 4, throught Packages manager and without any problems or error messages.
So, what can i do to solve this problem?
In the meanwhile i contacted Crip, the creator of my theme (Black14k) to see if he can help me founding the problem in his theme.