I've made some changes to my program, and uploaded it on my server.But i've got all kind of errors.The strange thing is if i put the original code back. it works again.But i didn't make that mutch changes in the project, how can this? And how can i solve it... In my project an on my local server it works fine! I'm convused... what to do? Server Error in '/' Application. Object reference not set to an instance of an object. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.Source Error: