Check your server’s error logs.
Turn on wp debug.
		
	 
	
	
	
 
		
			
	
	
		
		I get this error with wp debug
Translated in english it means:
bp_setup_udser was called up incorrectly. The current user is initialized without using $wp->INI().
Notice: bp_setup_current_user wurde fehlerhaft aufgerufen. Der aktuelle Benutzer wird ohne Verwendung von $wp->init() initialisiert. Weitere Informationen: Debugging in WordPress (en) (Diese Meldung wurde in Version 1.7 hinzugefügt.) in .../wp-includes/functions.php on line 3792 
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 30720 bytes) 
in .../wp-content/plugins/js_composer/include/classes/editors/class-vc-edit-form-fields.php on line 276
Why i have trouble with my user name and how can i fix it?
Thanks!
		
	 
	
	
	
 
		
			
	
	
		
		As shown by the errors you posted, the problem is the ‘Fatal error’ related to the js_composer plugin.
Try deactivating that plugin.
		
	 
	
	
	
 
		
			
	
	
		
		Hi,
thanks for your tip. I deleted the theme and all required plugins (composer inclusive) and installed it again. Now i`m activating als plugins one by one with the wp_debug on. until know all is fine.
buddyforms and buddyforms members still shows a lot of Notices with Undefined index. Can this be normal with some plugins? i think when i turn wp_debug on off the website works (and i don’t see the notices). 
		
	 
	
	
	
 
		
			
	
	
		
		I’m encountering an identical problem. Identified BuddyPress plugin as the cause of the 500 error (admin page)/ white screen (front page) via the error log; deleted. Reinstalled and encountered the same issue.