The solution to this issue is as follows: 

If the W-2 HSA contributions summation does not add up Box 12 Code W, then you need to adjust on Screen 51.011 Wages. In my situation, the amount was off by $2. This error is often caused by rounding embedded in the W-2. 

Also, if you have a multi-state issue, sometimes LaCerte is known to override box 12 inputs to one state automatically (on multi-state returns). My software did this and caused an error. I hope this helps!