Mathcad Prime 3 solver block

I'm slightly confused, can any one see why this will not solve.  I have 4 equations and 4 unknowns.

link is attached below.

any help would be greatly appreciated.

Thank you in advance.

I have tried putting all the static values in the guess values

https://www.dropbox.com/s/eh8hesqd5t0z9v1/T50047%20Tractor%20imposed%20loads.mcdx?dl=0