Bad DLL Call ERROR function call has invalid parameter

Hello,
This run-time error appeared when I turned on my PC. Is not my first DLL error and I think I solved once and for all the DLL errors with DLL fixer. I think is not working as I expected but can anyone help me to fix one? Why I have DLL errors? Can this be solved forever?
Thank you!

Bad DLL Call
ERROR: Function call has invalid parameter (step number 3, max=2)
OK
