At http://livecode.com/support/ask-a-question/at-what-point-do-... you say: "The FAQ on the FSF website states that the GPL does not apply to code simply “executed with an interpreter”. LiveCode is far more than a simple language interpreter and each language call utilizes internal libraries within the platform. These libraries provide the platform’s entire functionality and rich feature set."
However, every interpreter works by making calls to "internal libraries within the platform" which "provide the platform's entire functionality and rich feature set." If an interpreter did not contain the code to do the things that the interpreted language can do, then it wouldn't do anything at all and it wouldn't be an interpreter.
While I find LiveCode attractive, this license weirdness makes me uncomfortable enough that I haven't explored it even for my Open Source projects. It's not often that I find license interpretations that make Richard Stallman look moderate.