Summary:
to_bool function returns null while it requires a bool return
Detailed Description:
In lib/cge_util.php on line 401 it returns null, while it is stated on line 394
that the return must be bool.
This creates a error when using CGSmartImage and the filter_watermark="custom
watermark" parameter.
Because in class.CGImage_Watermark_Filer.php on line 69 it calls to_bool with a
TRUE parameter.