[MiKTeX] Error: The MiKTeX Core library has not been initialized

[Bernhard E. <bg...@gm...>]

Yap! is (sporadically) giving the following error:

MiKTeX Problem Report
Message: The MiKTeX Core library has not been initialized.
Data:
Source: c:\work3\miktex-2.5\libraries\miktex\core\internal.h
Line: 2170

So I can't open the dvi file and need to close de application manually
via Windows Task Manager. Anybody with this same issue? I'm running XP
Pro x64 Edition.

Att.

Bernhard.