Help : Font Deserialization Failed!

Help! I have a project that has been completed and tested fully and today
I was ready to move it to production. When I tried to open it,
I received the error:
Microsoft Development Environment is unable to load this document.
Deserialization Failed: Font 'Arial' doesn't support style 'Regular.'
I restored the .rdl from a backup, but got the same error.
Whats going on here? Is there any way to recover it? I opened the
.rdl with notepad and searched for the strings 'Arial' and 'Regular'
and neither turned up.
TIA,
Marc MillerI really need some help on this....my report development has stopped.
Additional Info:
I just tried creating a new report project and when I tried adding
a table to the layout I got the same error:
Font 'Arial' doesn't support style 'Regular'
The only this different since I created my last reports was that I
installed SQL Server SP3 on both my SQL Server 2000 and Analysis
Services (locally).
Marc|||FYI..
After uninstalling reporting services and re-installing I finally discovered
that my Arial font had become corrupted. I re-installed the font
and the error disappeared.
I don't know if the sp3 for SQL Server and Analysis Services corrupted the
font, but it remains suspect.
Marc