Jeah, thats true. REF() was designed for AHK Basic, not _L.
As far as I'm concerned, it's the UTF-Coding of the Scripts.
However, I'm currently rewriting REF() to Ref 2.0 with UTF-Support.
Also PNG's with transparency works this time.
So stay tuned. Maybe the old Version is still working if you compile it with the ANSII-.bin which is located in the compiler directory and avaliable directly via DDL in the Compiler GUI?!?