First of all I will thank Mr. Hardin and Mr. Skins for their time to try to help me with my problem.
But after repair, reboot and a Clip, which is unprotected, still the same error.
I have taken some screenshots to show you the process.
In my opinion, it's the encoding part which have a conflict, and this wasn't a problem before the Security Updates from Microsoft.
I have also tried to install NXT 4 on a similar computer after the security update, This computer didn't have NXT 3 before the Security update, With the same result.