Hi,

I am trying to upgrade from 4.09.05 to 5.04.04 as part of the recommended upgrade path.

My setup is IIS7, SQLServer2008 Express and .NET 4.0.

During the upgrade I did get a couple of error (executing 05 03 00, 05 04 03 and cleaning 05 00 00), however I looked through the forums and tweaked the connection strings and thought all was ok. 

The site seems to runs ok most of the time, however, in the Event Log I am routinely getting (in red):
 
General Exception    AssemblyVersion: 5.4.4; PortalID: -1; PortalName ...

AssemblyVersion: 5.4.4
PortalID: -1
PortalName:
UserID: -1
UserName:
ActiveTabID: -1
ActiveTabName:
RawURL: /
AbsoluteURL: /
AbsoluteURLReferrer:
UserAgent: Mozilla/5.0 (compatible; Baiduspider/2.0; +http://www.baidu.com/search/spider.html)
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: cfd312a7-f03f-4a44-9fb1-e653e6f7d908
InnerException: Object reference not set to an instance of an object.
FileName:
FileLineNumber: 0
FileColumnNumber: 0
Method: DotNetNuke.Services.Installer.XmlMerge.UpdateNode
StackTrace:
Message: System.NullReferenceException: Object reference not set to an instance of an object. at DotNetNuke.Services.Installer.XmlMerge.UpdateNode(XmlNode rootNode, XmlNode actionNode) at DotNetNuke.Services.Installer.XmlMerge.ProcessNode(XmlNode node) at DotNetNuke.Services.Installer.XmlMerge.ProcessNodes(XmlNodeList nodes, Boolean saveConfig) at DotNetNuke.Services.Installer.XmlMerge.UpdateConfigs() at DotNetNuke.Services.Upgrade.Upgrade.UpdateConfig(String strConfigFile, Version version, String strReason)
Source:
Server Name: xxxxxxx

All the General Exceptions have the same Method (as above).  I have notice that after an Edit that my Wiki Categories have vanished (which I could re-create if necessary).

Permissions on the folder all seem to be ok.

Am I best trying to resolve this General Exception etc, as the site is so close to being back on its feet, or should I roll back to 4.9.5 (in which case how do I resolve those three errors during the upgrade)?

Any advise appreciated (especially if it points to a solution as I am wasting days on this upgrade).
Thanks, Keith