Problem in convert Window Application to Web Application

KBOY

I want to convert my C#.NET window application program into ASP.NET Web application. The following code is workable in my window application. But it generals an exception in web applcation.
/////////////////////////////////////////////////
Soucecode:

com.imanage.cms.api.workteam.SessionManager manager = SessionManager.getInstance();

com.imanage.cms.api.workteam.SimpleSession dmsSession = manager.createSimpleSession("LoginForm", "192.168.1.12");

dmsSession.logon(strUsername, strPassword);
/////////////////////////////////////////////////

But it general the following unhandle exception when run "dmsSession.logon()"

base {java.lang.Throwable} = {"Could not find a part of the path 'C:\\WINDOWS\\system32\\config\\dictionaries\\mpdemo.key.60539.tmp'."}

Source: iManMPDotNet

What does it mean? Anyone know the problem? Thank you for your help!!!