error in TeXfy

Wu Zhang <[email protected]>
Newsgroups gmane.comp.tex.miktex
Message-ID <[email protected]>
Hi, folks,
I'm running the demo.tex file(under C:\Program Files\WinEdt Team\WinEdt\Samples\Examples) MiKTex 2.9 with WinEdt 5.5; there is MikTex problem report with the Yap window:
 
MiKTeX Problem Report
Message: Invalid argument
Data: 
Source: Libraries\MiKTeX\Core\FileStream.cpp
Line: 112
MiKTeX: 2.9
OS: Microsoft Windows XP Professional Service Pack 3 (build 2600)
Invokers: explorer/WinEdt
SystemAdmin: yes
PowerUser: no
Root0: C:\Documents and Settings\Wu Zhang\Application Data\MiKTeX\2.9
Root1: C:\Documents and Settings\Wu Zhang\Local Settings\Application Data\MiKTeX\2.9
Root2: C:\Documents and Settings\All Users\Application Data\MiKTeX\2.9
Root3: C:\Program Files\MiKTeX 2.9
UserInstall: C:\Documents and Settings\Wu Zhang\Application Data\MiKTeX\2.9
UserConfig: C:\Documents and Settings\Wu Zhang\Application Data\MiKTeX\2.9
UserData: C:\Documents and Settings\Wu Zhang\Local Settings\Application Data\MiKTeX\2.9
CommonInstall: C:\Program Files\MiKTeX 2.9
CommonConfig: C:\Documents and Settings\All Users\Application Data\MiKTeX\2.9
CommonData: C:\Documents and Settings\All Users\Application Data\MiKTeX\2.9

Could someone help me out?
 
Thanks  a lot!
 
Wu 

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