Hi everyone,

I upgraded DNN to version 4.8.4. The upgrade went through perfectly.

I seem to have a problem uploading pdf documents either through the File Manager or through any of the other modules.
the PDF extension is on the list allowed for upload.  Everytime i try to upload a pdf document, the website times out instantly.
I thought the issue dealt with file size but i was able to upload a word document that was larger than the PDF.

The error that comes up in the Event Viewer is:

AssemblyVersion: 04.08.04
PortalID: 0
PortalName: CAIR
UserID: 1
UserName: host
ActiveTabID: 56
ActiveTabName: RESEARCH
RawURL: /Default.aspx?TabId=56&ctl=Edit&mid=403
AbsoluteURL: /Default.aspx
AbsoluteURLReferrer: http://www.cair.org.tt/Default.aspx?TabId=56&ctl=Edit&mid=403
UserAgent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; InfoPath.1; .NET CLR 2.0.50727)
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: 82990bcc-8d29-4e09-a798-715d1da24c58
InnerException: Object reference not set to an instance of an object.
FileName:
FileLineNumber: 0
FileColumnNumber: 0
Method: DotNetNuke.UI.UserControls.UrlControl.cmdSave_Click
StackTrace:
Message: DotNetNuke.Services.Exceptions.PageLoadException: Object reference not set to an instance of an object. ---> System.NullReferenceException: Object reference not set to an instance of an object. at DotNetNuke.UI.UserControls.UrlControl.cmdSave_Click(Object sender, EventArgs e) at System.Web.UI.WebControls.LinkButton.OnClick(EventArgs e) at System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument) at System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) at System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) --- End of inner exception stack trace ---
Source:

Any help would be greatly appreciated.