I tried to upgrade my live site from 4.5.5 to 4.7 but decided to roll back to 4.5.5 after some issues with the Human Friendly  URL that I tried unsuccessfully to resolve.

I rolled back to my 4.5.5 site using back ups I had made of the SQL database and the DNN app folder (and to do some offline testing of the upgrade for my site). Through my hosting company's control panel I restored the pre-upgrade SQL db I had backed up and i also recreated the DNN app folder as it was before the attempted upgrade (using a ZIp archive I had made of the relevant app folder). Once I did that and visitied any page on the site I got an "entry 'RequestFilter' has already been added". Can anyone advise what I need to do to restore my website? Thanks

• Microsoft .NET Framework Version:2.0.50727.832;
• ASP.NET Version:2.0.50727.832

Parser Error Message: The entry 'RequestFilter' has already been added.

Source Error:

Line 70: <add name="UrlRewriteModule" type="UrlRewritingNet.Web.UrlRewriteModule, UrlRewritingNet.UrlRewriter" />
Line 71: <!-- add name="Authentication" type="DotNetNuke.HttpModules.AuthenticationModule, DotNetNuke.HttpModules.Authentication" / -->
Line 72: <add name="RequestFilter" type="DotNetNuke.HttpModules.Compression.RequestFilter.HttpModule, DotNetNuke.HttpModules.Compression" />
Line 73: <add name="UrlRewrite" type="DotNetNuke.HttpModules.UrlRewriteModule, DotNetNuke.HttpModules.UrlRewrite" />
Line 74: <add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />

As far as I know I restored all previously used files. These are the relveant steps I took:

• Before doing the upgrade I got my hosting company to
  • zip the entire DNN app folder (contating v4.5.5) on my website
  • make a back up (.bak) of my SQL db.
• When I decided to roll back from 4.7 to 4.5.5 I deleted all content of the DNN app folder
• I then asked my hosting company (I am in a shared hosting env) to unzip the ZIP archive into the (now empty) DNN app folder
• I restored the database
• And tried to access a DNN page on the site, at which point I got the error you see above.

Is there something I did wrong in the above? Or something I still need to do to do a proper "roll back"?

Thanks

Eoghano

Mitchel, you pointed me in the right direction as this truned out to be the case - a copy of web.config had ended up 'upstream'. I deleted it and got a new error message, see below. Any ideas on the next steps to trouble shoot? We are closing in on it. One thought that did occur to me, could the ZIP file I used for the backup be corrupted (in ceither creating or extracting the archive?)

Item has already been added. Key in dictionary: 'RegEx'  Key being added: 'RegEx'

[ArgumentException: Item has already been added. Key in dictionary: 'RegEx'  Key being added: 'RegEx']
   System.Collections.Hashtable.Insert(Object key, Object nvalue, Boolean add) +2807907
   System.Collections.Hashtable.Add(Object key, Object value) +11
   System.Configuration.Provider.ProviderCollection.Add(ProviderBase provider) +75
   UrlRewritingNet.Configuration.Provider.UrlRewritingProviderCollection.Add(ProviderBase provider) +40
   UrlRewritingNet.Web.UrlRewriting.Initialize() +181
   UrlRewritingNet.Web.UrlRewriting.CreateRewriteRule(String providerName) +13
   UrlRewritingNet.Web.UrlRewriteModule.Init(HttpApplication context) +217
   System.Web.HttpApplication.InitModulesCommon() +66
   System.Web.HttpApplication.InitInternal(HttpContext context, HttpApplicationState state, MethodInfo[] handlers) +814
   System.Web.HttpApplicationFactory.GetNormalApplicationInstance(HttpContext context) +243
   System.Web.HttpApplicationFactory.GetApplicationInstance(HttpContext context) +106
   System.Web.HttpRuntime.ProcessRequestInternal(HttpWorkerRequest wr) +340