#32 Web application issue

[Haribala]

We used Chmprocessor 1.7.3 and created web help. We incorporated into our web application (ASP.NET 4.0, VB.NET) and working fine. When we publish the website into server IIS7.5 and search any word, below error message is displayed.
Content and Topic tabs are working fine. Is it related with "System.Data.SQLite.dll" or search.aspx page?

"[NullReferenceException: Object reference not set to an instance of an object.]
PACRS.WebSite.Search.Page_Load(Object sender, EventArgs e) +713
System.Web.UI.Control.LoadRecursive() +70
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3063"

Please help.

[Haribala]

If I use System.Data.SQLite.DLL 1.0.52.0 which was added in bin folder when I created help web site, in webserver below is error:
"Could not load file or assembly 'System.Data.SQLite' or one of its dependencies. An attempt was made to load a program with an incorrect format. "

If I use System.Data.SQLite.DLL 1.0.91.0:
Help page is getting loaded. But search is throwing this error

"[NullReferenceException: Object reference not set to an instance of an object.]
PACRS.WebSite.Search.Page_Load(Object sender, EventArgs e) +713
System.Web.UI.Control.LoadRecursive() +70
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3063"