Thrown on Lua panic.

This exception is only thrown if there is no protected Lua call (e.g. pcall) to handle the error. Whenever this documentation says a function throws a  LuaErrorException, no D exception is actually thrown if a Lua error handler is in place.

Additionally, exceptions thrown in D functions given to Lua are converted to and propagated as Lua errors. You can subvert this by throwing an object not deriving from Exception (i.e. derive from Error, Throwable, etc).