I am having a strange problem with _lib PNG and GIF files. When I create a new project and use the default theme (ScriptCase7_Blue) some PNG files are missing from the _lib directory. For example, the sorting button for ascending and descending are missing. I can find them in the samples directory and had to copy them over to my application directory in order for my grid to display correctly.
Where do these files originate from and why would they be missing from a new project?