Dia won't load native Dia files

[Jeff Hornsberger <jhornsbe@csc.uvic.ca>]

Hi, I know I updated Dia today, but I'm not sure if this problem is a 
result of that or not. If I make a drawing in Dia and save the drawing 
to a file and then try to shut down Dia and then start it up again and 
load the drawing back from the file, Dia gives a message saying that the 
file is not a Dia file. Anybody else have this problem? Thanks. -Jeff