Hi,
first of all, congratulations for this program, it's amazing.
Sorry for my bad english. This is the problem:
After using the add button, Tixati remains locked (freeze) and it is necessary to close the task from windows.
The problem with these conditions:
- Windows 64 bit
- Tixati v2.58 64 bit
- I run Tixati with non administrator user (member of users). I have found that using an admin user the block does not occur.

Thanks.