Fixed to work with Tcl/Tk 8.3.0, at least, my modified copy of it.
diff --git a/Mac/Build/_tkinter.prj b/Mac/Build/_tkinter.prj
index 7ec5a79..b060a71 100644
--- a/Mac/Build/_tkinter.prj
+++ b/Mac/Build/_tkinter.prj
Binary files differ