Simplo Cufon

I have been using Simplo for months and just recently noticed that the cufon fonts are not showing up in IE. I don’t know if this is a recent IE upgrade. I’d really like to fix this, as I love the look of the embedded fonts. Any ideas what to change so those nice fonts will work in IE? I’ve turned off cufon for now because that is, of course, better than not having a menu in IE.

Thanks for any help!