got it to happen:
This plugin cannot create more than one PluginMenu with id: "{500d5c4d-eccx-419a-8c62-e3fc9e149894} 1"
Stack Begin
Script 'Swap 1.9.6.Libraries.PluginInterface', Line 41
Script 'Swap 1.9.6.Components.Widget.ChangeClass', Line 589
Script 'Swap 1.9.6.Components.Widget', Line 41 - function finishLoading
Script 'Swap 1.9.6.Components.Widget', Line 87
Script 'Swap 1.9.6.Core', Line 72
Stack End