PHP Error: Cannot send session cache limiter

Hello, i am trying to set up a members area on my website and have many problems. after login in the user goes to the memberpage and this error message appears:
PHP Code:



Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at C:UsersTeresaDocumentsxamppxampplitehtdocsmember_page.php:10) in C:UsersTeresaDocumentsxamppxampplitehtdocsmember_page.php on line 27




I can not find any spaces and i think that is what the error message is suggesting or am i wrong.

Sorted

Whoops just worked it out, sometimes you just can't see the wood for the trees.
thank you