Which Version of WED Approved for X-LifeTaxi Routes?

I have been using WED 1.51r1. I get inconsistent results. I always must edit the runway/hold/taxiway connections. All stands must be edited as expected, but sometimes a few stands are not recognized or used ever. Some airports get traffic right away with only minimal edits, others get no traffic until I had a few to many additional stands in the quick editor.

Does the WED version make a difference? Should I use WED 1.6?

Even with these minor issues I love X-Life! I fly almost 100% GA and being able to make the airports come to life is awesome! I started with my local airport and the freeware. I was impressed enough to buy the deluxe license. 

Thanks for any guidance. When I get a little better at this, I will post the ones I've done.