windows dia startup problem

[Talal Al-Azem <talazem gmx net>]

Hello.  I just downloaded and installed Dia on Windows XP.  It does 
start up, but before doing so I get a C:\ message in a black popup box 
that says:
I/O warning : failed to load external entitel "NULL"

If I close this box, it closes the whole of dia.  is there a way to get 
rid of this problem?  thank you.