[MiKTeX] Problems with Math Time Pro 2 fonts

[Pedro A. M. G. <pma...@po...>]

Since I began MikTex  2.5 I am unable to run papers written with Math Time
Pro 2 fonts. I get an error message MikTeX problem report: unknown
exception. And thereafter, invalid DVI file. What can I do to fix this
problem?

Thanks for any help you could offer me.