today, i found that i was not the only one who has this problem.
the program is that the PTS wallet is incompatible with the window8.1 system on my computer.
can 3I develop a new wallet program which can solve my problem, or i have to think about the other ways, like changing a system.
sorry for my English, i might not convey all the meanings i try to say perfectly.
Thank you for your hard work, especially for your patient help.