The failure may have many reasons: the file doesn't exist, the file exist but not in the path you are looking for. It has some different extention. Or the file at your path is not in correct bundle format. That's all I can tell you without code.
From the documentation:
+bundleWithPath:
Returns an NSBundle
object that corresponds to the specified directory.
+ (NSBundle *)bundleWithPath:(NSString *)fullPath
Return Value: The NSBundle
object that corresponds to fullPath
, or nil
if fullPath
does not identify an accessible bundle directory.