Running stable OH2, I had previously setup ZoneMinder and had a few items confgured through the GUI.
Then deleted the items and binding, confirmed its been removed and there are also no .items rules, but in the logs I keep getting this every few mins:
2017-10-08 08:36:00.611 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'ZoneMinderMonitorDoorCam_Online' for widget org.eclipse.smarthome.model.sitemap.Switch
2017-10-08 08:36:00.612 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Switch
2017-10-08 08:36:00.614 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Switch
2017-10-08 08:36:00.615 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.eclipse.smarthome.model.sitemap.Switch
2017-10-08 08:36:00.617 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'ZoneMinderMonitorDoorCam_Online' for widget org.eclipse.smarthome.model.sitemap.Switch
2017-10-08 08:36:00.619 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'ZoneMinderMonitorDoorCam_Online' for widget org.eclipse.smarthome.model.sitemap.Switch
2017-10-08 08:36:00.620 [ERROR] [ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'ZoneMinderMonitorDoorCam_Online' for widget org.eclipse.smarthome.model.sitemap.Switch
2017-10-08 08:48:23.857 [WARN ] [basic.internal.render.SwitchRenderer] - Cannot determine item type of 'ZoneMinderMonitorDoorCam_Online'
org.eclipse.smarthome.core.items.ItemNotFoundException: Item 'ZoneMinderMonitorDoorCam_Online' could not be found in the item registry
I’ve tried restarting OH2 and also rebooting the system. Still no luck.