Hudson Error Message: Admin user is missing Administer permission

I'm getting an error message in Hudson when I try to access the configuration page saying:

Admin user is missing Administe开发者_开发知识库r permission

I'm not aware of any changes in the configuration since it last worked. In the config.xml file the admin user appears to be set up correctly:

<permission>hudson.model.Hudson.Administer:admin</permission> 

Any ideas on how to fix this?

I solved the problem by disabling security in Hudson, then enabling security through the UI and setting up access control settings for the admin user again.