I see that using units with the maximize() function causes the connection to the kernel to be lost and then Maple (v2018) must be restarted for things to work properly.  This is obviously not desired behavior - is there any known workaround for this issue? (other than forgoing the use of units?).  Attached is a simple worksheet that illustrates this problem.  It has one part without units that works properly and one part with units that causes the error:  Units_Lose_Kernel.mw

I am using temperature units with thermophysical data and scientific constants but am getting inconsistent behavior when using these.  In some cases (e.g., when calling thermophysical data), it seems that it's best to use a Temperature object.  However I have tried to use scientific constants in calculations and it seems that temperature expressions work best (i.e., when using degrees K rather than deg F or deg C).  Simplifying/combining units don't seem to work when using a Temperature object (or when using expressions with deg F).  It may be something simple I am overlooking but I can't figure out the pattern of behavior yet.  I've attached a file that demonstrates the issue:  Temperature_Object_Use.mw

Thanks for any insight here.