you can try that way.
I was able to duplicate on my site both the 500 error referred to by Bobby and the solution suggested by olalala.
So basically, there is a conflict in Owall 1.6 between the core admin function (option) of deleting a member and the privacy plugin (when installed and activated).
OW Debug - Warning Message: call_user_func(PROFILEPROGRESSBAR_CMP_Widget::getStandardSettingValueList) [function.call-user-func]: First argument is expected to be a valid callback File: /home3/monacowe/public_html/social/ow_system_plugins/base/components/drag_and_drop_panel.php Line: 67
OW Debug - Exception
Message: Class PROFILEPROGRESSBAR_CMP_Widget does not exist File: /home3/monacowe/public_html/social/ow_system_plugins/base/components/drag_and_drop_item.php Line: 207 Trace: #0 /home3/monacowe/public_html/social/ow_system_plugins/base/components/drag_and_drop_item.php(207): ReflectionClass->__construct('PROFILEPROGRESS...') #1 /home3/monacowe/public_html/social/ow_system_plugins/base/components/drag_and_drop_item.php(92): BASE_CMP_DragAndDropItem->checkComponent('PROFILEPROGRESS...') #2 /home3/monacowe/public_html/social/ow_system_plugins/base/components/drag_and_drop_entity_panel.php(200): BASE_CMP_DragAndDropItem->setContentComponentClass('PROFILEPROGRESS...') #3 /home3/monacowe/public_html/social/ow_smarty/template_c/d4b6cae5eb5cd63239db34ce955f1f6047afcf32.file.drag_and_drop_entity_panel.html.php(118): BASE_CMP_DragAndDropEntityPanel->tplComponent(Array, Object(Smarty_Internal_Template)) #4 /home3/monacowe/public_html/social/ow_libraries/smarty3/sysplugins/smarty_internal_templatebase.php(180): content_52d3e5796c8300_31339368(Object(Smarty_Internal_Template)) #5 /home3/monacowe/public_html/social/ow_core/view_renderer.php(101): Smarty_Internal_TemplateBase->fetch('/home3/monacowe...') #6 /home3/monacowe/public_html/social/ow_core/renderable.php(263): OW_ViewRenderer->renderTemplate('/home3/monacowe...') #7 /home3/monacowe/public_html/social/ow_core/component.php(80): OW_Renderable->render() #8 /home3/monacowe/public_html/social/ow_system_plugins/base/controllers/component_panel.php(156): OW_Component->render() #9 /home3/monacowe/public_html/social/ow_system_plugins/base/controllers/component_panel.php(267): BASE_CTRL_ComponentPanel->action('profile', 1, false, Array, 'drag_and_drop_e...') #10 /home3/monacowe/public_html/social/ow_system_plugins/base/controllers/component_panel.php(283): BASE_CTRL_ComponentPanel->myProfile(Array) #11 [internal function]: BASE_CTRL_ComponentPanel->profile(Array) #12 /home3/monacowe/public_html/social/ow_core/request_handler.php(266): ReflectionMethod->invokeArgs(Object(BASE_CTRL_ComponentPanel), Array) #13 /home3/monacowe/public_html/social/ow_core/application.php(330): OW_RequestHandler->dispatch() #14 /home3/monacowe/public_html/social/index.php(65): OW_Application->handleRequest() #15 {main} Type: ReflectionExceptionPlease copy the errors you'll see and paste them here, so we could assist you further.
Bobby please, read this post: http://www.oxwall.org/forum/topic/12849
follow Aliya's instructions from the 2nd step.
Also I recommend you to contact profile progress bar plugin developer to fix that issue.