RS Fail to register URL, (no url is registered for vdir=/reports,) Keyset does not exist (Exception from HRESULT: 0x80090016)

Issue:
After fresh install and configuring RS, I go to http://<machine name>/reports , I get error as “An internal error occurred on the report server. See the error log for more details. (rsInternalError) Get Online Help

• Keyset does not exist (Exception from HRESULT: 0x80090016)”.

Note that even if RS UI says that ‘Success’, I have crash dump file. 

Things I have tried…
1.    Reinstalling RS.
2.    Reinstalling SQL ser only and then adding RS later and configure per info give at http://msdn.microsoft.com/en-us/library/ms157285.aspx
 http://www.hezser.de/blog/archive/2008/08/09/configuring-sql-server-2008-reporting-services.aspx
3.    Uninstalled IIS.
4.    I also tried creating ‘reports’ virtual folder manually but it started to give me permission issues and when I tried to hack the permissions, the final issue I got was ‘’accessing protected memory’. So I stopped perusing this option.

So I after a lot of research, I have not been able to resolve the issues.
I have posted threads and thank you for your input so far but issue is still not resolved.
http://social.msdn.microsoft.com/Forums/en-US/sqlreportingservices/thread/7f9513c3-05fd-43ed-bec4-46f1db6e5eca

Any help is really appreciated. I will try adding content of log file.