Thanks. That fixed the problem with Remove chess by UID. I am also seeing this.getWrapMode is not a function in another project but I have not isolated it into a small capx yet. I will post it when I track it down.
The crash is in Board are chess neighbors by UID ( i only tested non-wrapped neighbors). It doesn't crash if they are neighbors, only if they are not. The attached simple capx will crash immediately when you start it up.