Please PM me a link to your admin with login details so I can take a look. Also, provide the name and type of plugin you are saying that is producing the error. What do you mean by "If you disable the banner works."? Does this involve the same plugin?
I need you to be as specific as possible so we can replicate the error ourselves.
You'll need to contact a 3rd party for support on this issue. The load module tag is clearly the problem here. We do not support Joomla! core extensions.