Hi,

I've managed to get v.04.06.02 installed now, but starting it up is still a problem.

Am getting the following error:

DotNetNuke Error: - Version 04.06.02 The type initializer for 'DotNetNuke.Data.DataProvider' threw an exception.

Thanks for any help ...

This is a very common problem as I have also found, and extremely frustrating as it seems no-one has identified a reason,at least none that I could find.

I have encountered this error frequently when doing upgrades, even when following the recommended procedures. The cause is most likely a conflicting dll when the site is first loaded. A problem with loading the dlls in the bin causes some to not load, including the base DNN DataProvider dll. As this is required on the opening page it causes a total site failure.

What I found worked was the following procedure - note that this works when doing an upgrade but the principle still applies to other scenarious when a page is asked to load.

1. Delete everything in the \bin directory of the destination site. (scary but necessary, make sure you have a copy of everything first)
2. Copy the contents of the bin directory of the version of DNN that should be running, for example C:\DotNetNuke\Version4.6.2\DotNetNuke_04.06.02_Install\Bin
3. Now run the site. When doing a site upgrade this will allow the site upgrade process to proceed. Hopefully it will load after the upgrade process even though it might look funny.
4. Now copy the dlls for the modules that are registered into the bin of your destination site. See that the site still loads up.
5. Now copy the dlls for any other tools that you need, one at a time. Check each time.

By doing the gradual approach you may be able to find which dll causes a conflict and work out a resoution for that one.

HTH.