iphone uiimage not loading
===

I have a working app that uses a bunch of PNG files; it was running without problems.  I just downloaded two more icons from iconfinder.com, and can't get them to load into my app.

Here's my code:

    showKeyboardImage = [UIImage imageNamed:@"Bonjour.png"];
    printf("Bonjour %p %g %g\n", showKeyboardImage, showKeyboardImage.size.width, showKeyboardImage.size.height);
    
    // http://www.iconfinder.com/icondetails/36137/32/add_keyboard_icon
    showKeyboardImage = [UIImage imageNamed:@"1342878368_keyboard_add.png"];
    printf("showKeyboardImage %p %g %g\n", showKeyboardImage, showKeyboardImage.size.width, showKeyboardImage.size.height);
    
    // http://www.iconfinder.com/icondetails/36138/32/delete_keyboard_icon
    hideKeyboardImage = [UIImage imageNamed:@"1342878356_keyboard_delete.png"];
    printf("hideKeyboardImage %p %g %g\n", hideKeyboardImage, hideKeyboardImage.size.width, hideKeyboardImage.size.height);

Here's the output:

    Bonjour 0xbd33f70 32 32
    showKeyboardImage 0x0 0 0
    hideKeyboardImage 0x0 0 0

Yes, all three files are in the same directory.  Is it because I downloaded the icons from the internet?  Do I need to mark them safe to use or something?