Unable to save or compile a table object.

Hi everyone,

I have got stuck in a strange situation. The problem is i am not able to save or compile a table object. But i can save and compile all the other objects. This is the error which i get when i try to save or complie a table.

The RTC works perfectly fine, I tried running it as administrator, Tried changing the license, The services runs perfectly fine. The user has super permission in NAV and has dbowner in the sql. I tried turning off the firewall. Yet the same error keeps repeating. i would be much obliged if someone could throw a light on where else should i look? Any help is highly appreciated. Thanks in advance.