wmp11 c++ error

> Hi all , this morning my windows meda player started coming up with this
> error,
> Microsoft Visual C++ Runtime Libary
> Assertion Failed!
> Program:...rogram Files\Windows Media Player\wmplayer.exe
> File:..\geiss.cpp
> Line:509
>
> Expression:hdc==NULL
> I am using WXP Pro SP2, all updates current
> I have reinstalled media player to no avail,
> do you think doing a repair install of XP Pro will fix the problem or is
> there another way to fix it?
> Thank you in advance.
>