Ted, you nailed it on the head! Great detective work and  many thanks for posting this to the forums! That issue was becoming quite a road block for us trying to get to the latest version of DNN community.

Now that I have migrated from 7.00.06 to 7.01/00, I feel I can proceed to 7.02.00..

Cheers!

Doh - I wish I had found Ted Demetro's answer yesterday.  It would have saved me a lot of time.  I did my own research and fixed the problem by comparing the source code of DNN 6 and DNN 7.  I blogged about my research and the resolution here:   http://kevinlawry.wordpress.com/2014/...

In DNN 7, the AspNetMembershipProvider was moved from its own DLL into the main DotNetNuke.dll assembly.  The upgrade wizard fails to update the web.config to the new assembly location, and it does not delete the old unnecessary DLL.  When the application runs UserController.UpdateUser() it is actually calling the DNN 6 membership provider.  The stored procedure changed between versions, hence this error:  "System.ArgumentException: Parameter count does not match Parameter Value count."

The resolution is as simple as changing one line in the web.config.  Just remove ".Provider.AspNetProvider" from the AspNetMembershipProvider reference as follows:

<add name="AspNetMembershipProvider" type="DotNetNuke.Security.Membership.AspNetMembershipProvider, DotNetNuke.Provider.AspNetProvider" providerPath="~\Providers\MembershipProviders\AspNetMembershipProvider\" />