Strange characters displayed instead of code in 5.0

I am running R# 5.0 with Visual Studio 2005 on a 64 bit Windows 7 development machine.

I ran R# 4.5 and then upgraded to 5.0. Ever since then I see jumbled characters instead of underlined code in my editor.

The issue might look something like this:

public void SomeFunction()

{

     return;

     <?>_<?>_<?>_<?>_<?>_<?>_<?>_<?>_<?>_<?>_<?>_<?>_<?>_<?>_

}

where the "<?>_<?>_<?>_<?>_" jumble is actually unreachable code flagged by R#. The interesring thing is that if copy and paste the garbage into Notepad it will actually interpret the correct text.

Has anyone else seen this? It looks like there's a code page out of wack or something. Is there a setting i could tweak to avoid this?

Thanks,
Paul