Make sure your 'sa' account have required permissions to access to the data and make sure that you didn't wrote wrong password.
yes im not stupid :D
but ok..ive tryed now with mumaker 1.13 and works fine...
but all other mumakers dont work .. say login failed.. that error :/
anyway to solve that xD ?
Go to the Config.ini of the MuMaker then if doesn't work!
Try to press ok until you came to the Main application of MuMaker then fix it there. I think you will just click the Cycle Button or a book button. Choose among them.
i solved the prob...:)
prob is that other newer mumaker dont support my mu server xD