Upgraded my DNN to 4.7 and it all went well but now an XML module (which worked fine before) does not.  It displays an error:

System.formatException
Input string was not in a correct format.

in the module, and in the event log:

ModuleId: 406
ModuleDefId: 115
FriendlyName: Events
ModuleControlSource: DesktopModules/XML/XmlModule.ascx
AssemblyVersion: 04.07.00
PortalID: 0
PortalName: Dev-internal
UserID: -1
UserName:
ActiveTabID: 36
ActiveTabName: Home
RawURL: /Default.aspx
AbsoluteURL: /Default.aspx
AbsoluteURLReferrer:
UserAgent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.9) Gecko/20071025 Firefox/2.0.0.9
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: 93450147-bd14-44bc-b270-7345b2129140
InnerException: Input string was not in a correct format.
FileName:
FileLineNumber: 0
FileColumnNumber: 0
Method: System.Number.StringToNumber
StackTrace:
Message: DotNetNuke.Services.Exceptions.ModuleLoadException: Input string was not in a correct format. ---> System.formatException: Input string was not in a correct format. at System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberformatInfo info, Boolean parseDecimal) at System.Number.ParseInt32(String s, NumberStyles style, NumberformatInfo info) at DotNetNuke.Common.Globals.GetExternalRequest(String Address) at DotNetNuke.Modules.XML.Utils.GetXSLContent(String ContentURL) at DotNetNuke.Modules.XML.XmlController.GetXslTransform() at DotNetNuke.Modules.XML.XmlController.Render(TextWriter output) at DotNetNuke.Modules.XML.XmlModule.Render(HtmlTextWriter output) --- End of inner exception stack trace ---
Source:
Server Name: DEVINT02

There are no syntax or other errors in the XML or XSL... what's going on here?  Thanks in advance for any assistance...

Perfect!  the dev box doesn't sit behind a proxy (ProxyPort  is empty as is ProxyServer) but as soon as I put "30" in the WebRequestTimeout [which was empty] everything was good again.

Thanks so much for your help!

When I made the change on the remote server, which wasn't pulling the XML from the LAN server but instead across the internet, it still didn't work [error message gone, but no data in the module]... then I saw your reply and realized it was ms not sec, so changed to 30000 and everything is good. 

FWIW, I tested on both my dev machines, when I take out this value the error that I posted in the 1st msg comes back.  I did not have this problem until installing 4.7.

Again thank you so much for your help!