Hi, 

I tried to set my apppool to use asp.net 4.5 on  my shared hosting that has a virtual directory for my wordpress blog.  However after updating the apppool to 4.5 I can not get IIS to use the default document for the virtual directory named blog.  It worked just fine with an 2.0 apppool.  I have checked the de4fault document and it is set correctly in IIS and the web.config for the virtual directory.  If I browse to the /blog/ virtual directory I get this error:  

Server Error in '/blog' Application.

Object reference not set to an instance of an object.

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.NullReferenceException: Object reference not set to an instance of an object.

Source Error: 

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace: 

[NullReferenceException: Object reference not set to an instance of an object.]
   DotNetNuke.Common.Globals.get_Status() +91
   DotNetNuke.HttpModules.RewriterUtils.OmitFromRewriteProcessing(String localPath) +39
   DotNetNuke.HttpModules.RequestFilter.RequestFilterModule.FilterRequest(Object sender, EventArgs e) +205
   System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +136
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +69

If I browse to /blog/index.php my wordpress blog loads just fine.  What am I missing?  Thanks in advance.  My web.config is below.  

Thanks.  

Kevin

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<system.webServer>
<directoryBrowse enabled="false" />
<defaultDocument>
<files>
<clear />
<add value="index.php" />
</files>
</defaultDocument>
<httpCompression directory="%SystemDrive%\inetpub\temp\IIS Temporary Compressed Files" minFileSizeForComp="0">
<scheme name="gzip" dll="%Windir%\system32\inetsrv\gzip.dll" />
</httpCompression>
<urlCompression doStaticCompression="true" doDynamicCompression="true" />
<staticContent>
<remove fileExtension=".js" />
<mimeMap fileExtension=".js" mimeType="text/javascript" />
</staticContent>
<rewrite>
<rules>
<rule name="WordPressRewriteRule" stopProcessing="true">
<match url=".*" />
<conditions>
<add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true" />
<add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true" />
</conditions>
<action type="Rewrite" url="index.php" />
</rule>
</rules>
</rewrite>
</system.webServer>
</configuration>