ZCM 10.0.1 on windows Server 2003 R2 - Framework 3.0

In the windows application log event, Zenworks send warning each 20 seconds since the install of zen (7 days approx):

Source: Zenworks Categorie: 30001 ID:4096
Warning Loader.DiscoveryModule Error on line -1: Premature end of file. Error on line1

Have you got any idea please??