Hello everyone.   I have a problem. I am trying to run an an a Coupled Linear Heat Transfer/Structure Analysis based on this guide:   https://altairhyperworks.com/hwhelp/Altair/2017/help/hwsolvers/hwsolvers.htm?rd1080.htm   and when I am trying to start it error pops up saying: Case Control data LOAD=1 is not referenced by any bulk data  relevant for used subcase type. I tried to figure it out by myself but I am new to Hyperworks and I don't really know what's cau