PLEASE ANYONE CAN HELP I'LL BE VERY GRATEFUL...I PUT A MODEL IN NAVISWORKS MANAGE 2014 AND I DIVIDED INTO SETS AND ATTACHED IT TO ACTIVITY LIST WITH PLANNED DATES..NUT MY ONLY PROBLEM WHEN I CLICK ON THE SIMULATE BUTTON TO TRY SEE THE ANIMATION EVERYTHING DISAPPEARS CAN YOU HELP ME AND TELL ME WHAT DID I DO WRONG ?