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was running now no start

I have a 70050-1 ultimate ls system, it fired up and ran fine for around 25 hours, parked it for a week, now it will not start! Fuel pump works, power to the coils, just no spark. Any ideas would be appreciated! thanks

First check that the program you chose to operate with is still chosen.

If the handheld shows RPM during cranking, inspect the wiring and plugs to the cam sensor. Maybe replug the ECM plug.

i am getting spark, just no fuel. I have a pressure guage at the fuel rail. its good. Put a noid light on the injector and nothing.

I wonder if I'm having a similar issue now.  I've started and ran the car many times as I'm finishing the build.  The last two times I've gone to run the car, it cranks and no start.  I have spark and fuel pressure in the rails.  If i spray a little starter fluid, it'll fire up and keep running.  Hot starts after this are also successful.   Thoughts?