Hi, Glen
Look like you dropped through a Crack Hear, Sorry about that.
Have you swapped your Gecko's around.
What's your Power Supply Volt's Amp's,.
CPU speed, XP or 2000.
Looked at the Tutorials Above, Documentation, Optimize, There are programs like QuickTime that can cause Problems.
Are X and A set up exactly the same in, Ports & Pins, (step/Dir LowActives the same), Motor Tuning, (Steps Per, Vel & Accel), Home & Limits. ( Reversed un checked).
Thanks, Chip