Problem with arcs on a Dynapath Delta 20

I have a simple program that I created in BobCad version 20 yesterday. Basically, it's just clearing out a square area with a round island in the middle. The program, which is a horizontal pocket program, works fine until it gets to the round island. It creates an error on the Dynapath controller. Here's the error:

021: START RADIUS <> END RADIUS

I can't find any issues with the program. I double checked the points in BobCAD and in Autocad, and everything appears to be correct between the cad file and the code that was created by BobCAD.

Here's the section of code (line 18) that fails:

N15X4.$
N16Y1.2504$
N17X2.0243$
N18(2)X2.5594Y1.5004R0.75D1$
N19(1)X4.$
N20Y1.7504$

I've tried using the I, J method as well, but I get the same error. Any ideas?


Thanks
btm