Track down "Error: Class name must start with uppercase character"

[kevin...@gmail.com]

IDE: 

FlashDevelop

Issue:
"Error: Class name must start with uppercase character" shows up in the console (sometimes, but not always) and the code completion stops working when the error shows up. The error message is not helpful because it does not tell which class caused the problem. However, the code compiles without any problems. I have used various library and have completely no idea what caused the error. Is there any way to track down the problem? 

[Simon Krajewski]

This should be fixed: https://github.com/HaxeFoundation/haxe/issues/1932

Simon