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You have two problems: one is really easy to fix, the other is much more tricky (for new users at least).

Problem 1: trivial

** Severe  ** <root>[Coil:Heating:Water][Coil Heating Water 1] - Missing required property 'water_inlet_node_name'.
** Severe  ** <root>[Coil:Heating:Water][Coil Heating Water 1] - Missing required property 'water_outlet_node_name'.

The message should point you directly to the fix. If you look at your coil Heating water, it is placed only on your AirLoopHVAC, and it doesn't have a connection to a PlantLoop. I just connected it properly to the PlantLoop.

Problem 2: harder

You have one heating coil on your plantLoop, but this coil isn't on an AirLoopHVAC. Similarly, "CHW Clg Coil 2" and "Fan Constant Volume 4" are nowhere to be found... This is because you actually have an orphaned "AirLoopHVACUnitarySystem" in your model (orphaned=not placed on an AirLoopHVAC) and this unitary system contains the Fan, the heating coil, and the cooling coil. I removed it via the ruby bindings:

unitary = m.getAirLoopHVACUnitarySystems[0]
unitary.remove

Now your model will run correctly. I have uploaded the fixed model here. Please note that it was upgraded to OpenStudio 2.5.1 (the version I have on my system), so you won't be able to load it in OpenStudio 2.4.0.