Error message apearing in knx binding 1.7.0

Hi,

As of a sudden - No change in oh Software - nor an change in knx Setup - i recEive following error:
2015-11-11 19:36:59.778 [INFO ] [openhab.model.script.Dashboard] - Item Light_DG_Studio_Ceiling has changed state from 100 to: 0
2015-11-11 19:37:17.097 [ERROR] [.b.knx.internal.bus.KNXBinding] - Error while receiving event from KNX bus: org.apache.commons.lang.IllegalClassException: Cannot process datapoint of type DECREASE
2015-11-11 19:37:18.618 [ERROR] [.b.knx.internal.bus.KNXBinding] - Error while receiving event from KNX bus: org.apache.commons.lang.IllegalClassException: Cannot process datapoint of type DECREASE
2015-11-11 19:38:00.380 [ERROR] [.b.knx.internal.bus.KNXBinding] - Error while receiving event from KNX bus: org.apache.commons.lang.IllegalClassException: Cannot process datapoint of type DECREASE

Anyone an idea?