AutoCAD Inventor :: Simulation Missing Applied Loads

I was running a simulation with success including gravity and applied loads.  I was checking both stresses and deflections.  Both were in line with what I was expecting.  The next day I went to change a few dimensions and run it again.  The stresses and deflections were significantly less than expected (I did not tweak the dimensions very much).  I changed my dimensions, remeshed and ran it again.  It worked fine and returned expected results.  I continued in this manner tweaking the size of my box.  

Finally I went for one last run....  it didn't work again.  It returned the significantly less than expected results.   A bit of investigating revealed that it is only applying the gravity loads during the simulation.  All of the applied loads are being disregarded (however, they show up in the report as if they are being applied.) If I supress the gravity my stress and deflections return 0 values.  I have tried taking my loads off and reapplying them.  I have tried removing the gravity load.  I have remeshed. I have inputted my loads and the gravity in different orders.  I cannot get my simulation to calculate using my applied loads. It was working fine.... what happened?