The problem occurs only, and with all "dynamic graphic" objects.
I realized that there is a URL call for some "ajax...google..." site.
Probably there is the problem, as this call does not happen with other graphic objects.
The debug-mode log does not contain any useful information.
Here is the call of a view containing a horizontal level (dyn. graphic), that fails:
And a view call without the level graphic, that works smoothly:
DEBUG 2013-12-19 08:39:20,637 (com.serotonin.m2m2.rt.EventManager.returnToNormal:216) - Event returned to normal: type=DataSoureEventType(dataSourceId=6, eventTypeId=1) DEBUG 2013-12-19 08:39:20,638 (com.serotonin.m2m2.rt.EventManager.returnToNormal:216) - Event returned to normal: type=DataSoureEventType(dataSourceId=6, eventTypeId=2) DEBUG 2013-12-19 08:39:21,336 (com.serotonin.m2m2.rt.EventManager.returnToNormal:216) - Event returned to normal: type=DataSoureEventType(dataSourceId=14, eventTypeId=1) DEBUG 2013-12-19 08:39:21,338 (com.serotonin.m2m2.rt.EventManager.returnToNormal:216) - Event returned to normal: type=DataSoureEventType(dataSourceId=14, eventTypeId=2) DEBUG 2013-12-19 08:39:21,341 (com.serotonin.m2m2.rt.EventManager.returnToNormal:216) - Event returned to normal: type=DataSoureEventType(dataSourceId=15, eventTypeId=1) DEBUG 2013-12-19 08:39:21,343 (com.serotonin.m2m2.rt.EventManager.returnToNormal:216) - Event returned to normal: type=DataSoureEventType(dataSourceId=15, eventTypeId=2) DEBUG 2013-12-19 08:39:27,121 (com.serotonin.m2m2.rt.EventManager.returnToNormal:216) - Event returned to normal: type=DataSoureEventType(dataSourceId=15, eventTypeId=1) DEBUG 2013-12-19 08:39:27,124 (com.serotonin.m2m2.rt.EventManager.returnToNormal:216) - Event returned to normal: type=DataSoureEventType(dataSourceId=15, eventTypeId=2) DEBUG 2013-12-19 08:39:33,323 (org.springframework.web.servlet.handler.AbstractUrlHandlerMapping.getHandlerInternal:221) - Mapping [/public_view.htm] to HandlerExecutionChain with handler [com.serotonin.m2m2.web.mvc.UrlHandlerController@7f68faf3] and 1 interceptor DEBUG 2013-12-19 08:39:46,864 (com.serotonin.m2m2.rt.EventManager.returnToNormal:216) - Event returned to normal: type=DataSoureEventType(dataSourceId=15, eventTypeId=1) DEBUG 2013-12-19 08:39:46,868 (com.serotonin.m2m2.rt.EventManager.returnToNormal:216) - Event returned to normal: type=DataSoureEventType(dataSourceId=15, eventTypeId=2) DEBUG 2013-12-19 08:40:05,817 (com.serotonin.m2m2.rt.EventManager.returnToNormal:216) - Event returned to normal: type=DataSoureEventType(dataSourceId=8, eventTypeId=1) DEBUG 2013-12-19 08:40:05,818 (com.serotonin.m2m2.rt.EventManager.returnToNormal:216) - Event returned to normal: type=DataSoureEventType(dataSourceId=8, eventTypeId=2) DEBUG 2013-12-19 08:40:05,842 (com.serotonin.m2m2.rt.EventManager.returnToNormal:216) - Event returned to normal: type=DataSoureEventType(dataSourceId=7, eventTypeId=1) DEBUG 2013-12-19 08:40:05,843 (com.serotonin.m2m2.rt.EventManager.returnToNormal:216) - Event returned to normal: type=DataSoureEventType(dataSourceId=7, eventTypeId=2) DEBUG 2013-12-19 08:40:05,864 (com.serotonin.m2m2.rt.EventManager.returnToNormal:216) - Event returned to normal: type=DataSoureEventType(dataSourceId=11, eventTypeId=1) DEBUG 2013-12-19 08:40:05,864 (com.serotonin.m2m2.rt.EventManager.returnToNormal:216) - Event returned to normal: type=DataSoureEventType(dataSourceId=11, eventTypeId=2)SUGGESTED SOLUTION:
Don't use some funny external ajax calls for such simple things, but include the graphics into the mango module code. As intermediate solution, mapping it as an analog graphic will do.