PTC Help Desk answered this one. There is a "hidden" config file option called udf_tol_std_chk when set to no solves the issue. Apparently this is only a problem when accessing older UDFs. The answer to the problem brings up another question: Does anyone have a more recent copy of the hidden config option list than I do? Mine is from about 5 or 6 years ago and I'm sure there are some new ones.
Matt Seibert IT Analyst - Contingent ProE+Intralink+PDMLink Support > John Deere Turf Care > 6501 NC Highway 55 E > Fuquay-Varina, NC 27526