OW Debug - Exception

Message: Duplicate username! File: /home/content/34/11756234/html/applefallsfriends/ow_system_plugins/base/bol/user_service.php Line: 868 Trace: #0 /home/content/34/11756234/html/applefallsfriends/ow_install/controllers/install.php(472): BOL_UserService->createUser('changedforposting', 'changedforposting', 'jestorment@gmai...', NULL, true) #1 /home/content/34/11756234/html/applefallsfriends/ow_install/controllers/install.php(445): INSTALL_CTRL_Install->installComplete(Array) #2 [internal function]: INSTALL_CTRL_Install->plugins() #3 /home/content/34/11756234/html/applefallsfriends/ow_install/classes/application.php(53): call_user_func_array(Array, Array) #4 /home/content/34/11756234/html/applefallsfriends/ow_install/install.php(75): INSTALL_Application->display(false) #5 /home/content/34/11756234/html/applefallsfriends/index.php(32): include('/home/content/3...') #6 {main} 

 Type: LogicException

I get stuck after the page where you choose plugins after i hit finish i get the error above. I have tried choosing no plugins but no diference. Its says duplicate username file??? no idea what to do???