Could you post an IMAGE (LV 4.1 is getting scarce these days) of your code so we can take a look?
It sounds as if the listen is being invoked again. There have been some changes and fixes implemented since LV 4.1 so I can not say that I have seen this issue previously. Trying to offer what little help I can, Ben <a href="http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=261&HRedirected=True&HUserId=101_3529&RFORMNUMBER=6";>Ben Rayner</a> <a href=" http://volt.ni.com/niwc/common.jsp?page=products_certification_cld&node=10638";> Certified LabVIEW Developer </a> www.DSAutomation.com
