Hi, David, In reivison#72390 we constrain Eiffel Studio end users only can load normal mode layouts when Eiffel Studio is normal mode, and only can load debug mode layouts when Eiffel Studio is debug mode. When end user try to load a debug layout when Eiffel Studio is in normal mode, Eiffel Studio will force debug mode first, and vice visa. This way will not confuse Eiffel Studio end users. ;)