Safely Remove Hardware always gives an illegal memory error with r

[kg5lt]

I get an error saying that a certain instruction tried to access an illegal
memory location in rundll32.exe when trying to Safely Remove Hardware.

Is rundll32,.exe corrupt or some other program? I also am having printing
problems to a USB port (Dymo LabelWriter 330). Can this be related to the
rundll32.exe problem?

Is there a way to get a fresh copy of rundll32.exe, if it might be corrupt?

Thanks.