You are probably facing this: Data entry app not loading - #18 by jaime.bosque
The solution goes by creating at least one element in these tables:
identifiableObjectManager.getLastUpdated( DataElement.class ),
identifiableObjectManager.getLastUpdated( OptionSet.class ),
identifiableObjectManager.getLastUpdated( Indicator.class ),
identifiableObjectManager.getLastUpdated( DataSet.class ),
identifiableObjectManager.getLastUpdated( CategoryCombo.class ),
identifiableObjectManager.getLastUpdated( Category.class ),
identifiableObjectManager.getLastUpdated( CategoryOption.class ) ) )
So make sure there is at least, one item in your OptionSet, Indicator, etc, etc