I think I finally found and fixed the problem.
In September of last year someone requested the ability to enter a fraction of a meter instead of whole numbers when enter the "Distance" of a race. So I allowed the software to accept decimal place values for the distance - for example 3,218.68 meters.
It looks like Arrow Live Results does not accept this and it errors out when trying to submit the race to the website. So with the update I just pushed out I simply round the distance up to the next whole meter when submitting to Arrow. Later I'll look and see if I can make Arrow accept the decimal value.