I'm seeing an unusual parser/compilation issue with an ASP.NET 2.0 application I need help with.  I've deployed a few commercial ASP.NET 2.0 apps already (including one really big one: ~1M visitors/day) but it's the first time I've seen this issue.  From my Google searches it appears this question has been asked before only once --here on these forums-- but not answered.  This bug is a showstopper for our current project; we can't deploy because of it.

Unable to cast object of type 'System.Web.Compilation.BuildResultCompiledAssembly' to type 'System.Web.Util.ITypedWebObjectFactory'.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.InvalidCastException: Unable to cast object of type 'System.Web.Compilation.BuildResultCompiledAssembly' to type 'System.Web.Util.ITypedWebObjectFactory'.

Stack Trace:

[InvalidCastException: Unable to cast object of type 'System.Web.Compilation.BuildResultCompiledAssembly' to type 'System.Web.Util.ITypedWebObjectFactory'.]
System.Web.Compilation.BuildManager.GetVirtualPathObjectFactory(VirtualPath virtualPath, HttpContext context, Boolean allowCrossApp, Boolean noAssert) +123
System.Web.Compilation.BuildManager.CreateInstanceFromVirtualPath(VirtualPath virtualPath, Type requiredBaseType, HttpContext context, Boolean allowCrossApp, Boolean noAssert) +54
System.Web.UI.PageHandlerFactory.GetHandlerHelper(HttpContext context, String requestType, VirtualPath virtualPath, String physicalPath) +31
System.Web.UI.PageHandlerFactory.System.Web.IHttpHandlerFactory2.GetHandler(HttpContext context, String requestType, VirtualPath virtualPath, String physicalPath) +40
System.Web.HttpApplication.MapHttpHandler(HttpContext context, String requestType, VirtualPath path, String pathTranslated, Boolean useAppConfig) +139
System.Web.MapHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +120
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155

For pages with user controls, the issue manifests itself as a nonsense parser error:

Parser Error Message: The file 'src' is not a valid here because it doesn't expose a type.

Source Error:

Line 1:  <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Profile.aspx.cs" Inherits="RDWeb.Profile" %>
Line 2:  
Line 3:  <%@ Register src="Controls/PostList.ascx" TagName="PostList" TagPrefix="rd" %>
Line 4:  <%@ Register src="Controls/Expertise.ascx" TagName="Expertise" TagPrefix="rd" %>
Line 5:  <%@ Register src="Controls/Activities.ascx" TagName="Activities" TagPrefix="rd" %>

Can anyone tell me what this issue is, and how to resolve it?

thanks!
Susan

I'm going to answer my own question, courtesy of my co-worker Adrian Anttila.  This KB article answers the question (now if only Google would index it!): http://support.microsoft.com/kb/924731.  I don't have any satellite assemblies in my application, but I did have an assembly-level attribute setting the culture to "en-US".  Clearing the attribute cleared the problem.

 [assembly: AssemblyCulture("")]

SWarren:

I'm going to answer my own question, courtesy of my co-worker Adrian Anttila.  This KB article answers the question (now if only Google would index it!): http://support.microsoft.com/kb/924731.  I don't have any satellite assemblies in my application, but I did have an assembly-level attribute setting the culture to "en-US".  Clearing the attribute cleared the problem.

 [assembly: AssemblyCulture("")]

SWarren (and all) --

That KB article did not help my situation.

I am still getting the error.

Do you have any other suggestions?

Please advise.

I have posted the details of my situation here...

http://forums.asp.net/thread/1580602.aspx 

...so any help that you can be would be greatly appreciated.

Thank you.

-- Mark Kamoski