It would appear as though you have the box in your mash profile checked for 'Use equal batch sizes' under 'batch sparge options'. Also check that you have your batch sparge set for 100%.
It appears as though it is calling for more sparge water than you currently have the profile set to handle in one batch. Given your mash tun capacity that is showing, you should be able to do this in 2 steps: drain mash tun and batch sparge. If this still gives you a figure that exceeds the volume of your mash tun, then you can edit the infusion step and increase the water used for your initial strike infusion up just a bit.