Hi,
The first thing to do in this case is to upgrade your Logos version to the latest one, that you can download from :
http://digital.ni.com/softlib.nsf/954feaeea92d90918625674b00658b83/c1a484551a75614686256ae300734336?OpenDocument
After upgrading it, verify if the behavior still persists.
Best Regards
Andre Oliveira