After installing PageBlaster I get "Object reference not set to an instance of an object" error once in a while (on different pages). I refresh the page, and then it's displayed correctly. When I look at the event viewer I see this:

AssemblyVersion: 04.09.00
PortalID: -1
PortalName:
UserID: -1
UserName:
ActiveTabID: -1
ActiveTabName:
RawURL: /monetaintranet/default.aspx
AbsoluteURL: /monetaintranet/default.aspx
AbsoluteURLReferrer:
UserAgent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: daef3261-5843-47fb-88dd-df3ae3a6116d
InnerException: Unhandled Error:
FileName:
FileLineNumber: 0
FileColumnNumber: 0
Method: Snapsis.HttpModules.PageBlaster.PageBlasterModule.PreSendRequestHeaders
StackTrace:
Message: System.Exception: Unhandled Error: ---> System.NullReferenceException: Object reference not set to an instance of an object. at Snapsis.HttpModules.PageBlaster.PageBlasterModule.PreSendRequestHeaders(Object sender, EventArgs e) at System.Web.HttpApplication.SendResponseExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) --- End of inner exception stack trace ---
Source:
Server Name: MGSQL3


What could be the problem?

Thanks,
Julia

I've decided to remove PageBlaster, since it's causing problems, but I can't do that either. If I remove this line from the web.config file:

<add name="PageBlaster" type="Snapsis.HttpModules.PageBlaster.PageBlasterModule, Snapsis.HttpModules.PageBlaster" preCondition="managedHandler" /-->

then I get the DNN upgrade page.

Could you please help?

Hi Julia,
Maybe the web.config file is getting messed up somehow. Possibly an errant comment or something.

If you want to send me a private message with access details I can check it out for you.