Ok, this is what I have done now. Restored from previous again (7.1.0). Made sure NETWORK SERVICE (application pool user) had all permissions in wwwroot and in DotNetNuke_Community_07.01.02_Upgrade. Deleted the Install folder in wwwroot to remove all old files. Copied upgrade over and performed upgrade. This time no errors! Site is working fine for all normal users. However, I still can't get into Host settings or Admin site settings.
I performed the resources upgrade as per Sebatian's suggestion and got no errors:
IInstalling Resources
Install Resources Status Report
00:00:00.046 - Installing Optional Modules:
00:00:00.093 - Installing Package File DDRMenu_02.00.03_Install: Success
00:00:03.656 - Installing Package File DNNCE_CoreMessaging_07.01.02_Install: Success
00:00:04.156 - Installing Package File DNNCE_DigitalAssetsManagement_07.01.02_Install: Success
00:00:04.687 - Installing Package File DNNCE_HTML_07.01.02_Install: Success
00:00:05.265 - Installing Package File DNNCE_Journal_07.01.02_Install: Success
00:00:05.781 - Installing Package File DNNCE_MemberDirectory_07.01.02_Install: Success
00:00:06.187 - Installing Package File DNNCE_MobileManagement_07.01.02_Install: Success
00:00:06.500 - Installing Package File DNNCE_PreviewProfileManagement_07.01.02_Install: Success
00:00:06.921 - Installing Package File DNNCE_RazorHost_07.01.02_Install: Success
00:00:07.593 - Installing Package File DNNCE_SocialGroups_07.01.02_Install: Success
00:00:08.328 - Installing Package File DNNCE_Taxonomy_07.01.02_Install: Success
00:00:08.734 - Installing Package File DNNCE_UrlManagement_07.01.02_Install: Success
00:00:08.953 - Installing Package File Telerik_07.01.02_Install: Success
00:00:11.953 - Installing Optional Skins:
00:00:11.953 - Installing Optional Containers:
00:00:11.968 - Installing Optional Languages:
00:00:11.968 - Installing Optional Providers:
00:00:11.968 - Installing Package File DNNMenuNavigationProvider_07.01.02_Install: Success
00:00:12.218 - Installing Package File FiftyOneClientCapabilityProvider_07.01.02_Install: Success
00:00:12.921 - Installing Package File RadEditorProvider_07.01.02_Install: Success
00:00:14.187 - Installing Optional AuthSystems:
00:00:14.203 - Installing Optional Packages:
Installation Complete
In the main site for site or host settings I get:
A critical error has occurred. Object reference not set to an instance of an object.
When I go to Site or host settings in one of the portals I get:
A critical error has occurred. Could not load file or assembly 'FileHelpers, Version=2.0.0.0, Culture=neutral, PublicKeyToken=3e0c08d59cc3d657' or one of its dependencies. The system cannot find the file specified.
I am at a loss how to proceed ...
A critical error has occurred. Could not load file or assembly 'FileHelpers, Version=2.0.0.0, Culture=neutral, PublicKeyToken=3e0c08d59cc3d657' or one of its dependencies. The system cannot find the file specified.