"base" cannot solve network hydraulic equations at base

Hi, 

I am having issues with my system. I am getting  the error " cannot solve network hydraulic equations at base. We are pretty new to using waterGems and can't find how to fix it. We don't get any errors when running an analysis. 

There are four files to this system, but only able to load one  not sure which one you need. 

 Thank you in advance

 3326.VCP2 - Troubleshoot 1.wtg