xl97:
I can post the code(s).. (both) to compare..but they are NOT pretty.. lots of commented out lines..etc. for testing and notes..etc (yadda yadda)
Given that you've already found the critical part of the code that provokes the error, I suggest you use that knowledge to write a sketch that demonstrates the problem as simply and directly as possible. That way, people can concentrate on the code that causes it, rather than wading through code which is largely irrelevant.