Network Analyst - New Vehicle Routing Problem -  Stuck at 33%

Discussion created by tdolney on Sep 25, 2012
Latest reply on Sep 28, 2012 by nan-esristaff
I am using Network Analyst - New Vehicle Routing Problem - to route garbage trucks as they travel house-to-house, collect garbage, travel to the landfill and then resume their routes. 

Modelling approximately 300 houses is not a problem.  However, when I use 500 or more houses as stops, the program cannot complete and is stuck at 33%.  Letting the program run overnight does not work as it's still working in the morning and I then have to "close" the program.

Any help/suggestions????