Hi,
This bug is a little annoying and has been around for at least the few releases. In Lite-C if you use #include "folder\folder\script.c" (for example, I have the main script then a scripts folder and then a header folder within it) WED will be unable to open it, however, it will compile and run fine.

This really only causes problems when WED will automatically update the scripts and will pop up with errors saying "Can't open script file 'file'". It just becomes irritable

Thanks,
James