Avatars plugin issues

Hi there,
I found few problems with your Avatars plugin.
1. Big image problem -> I tried to upload jpg image with size 1.6Mb and dimensions 2612x2592 (Suggestions - limit size of uploading image, maybe dimensions limit is required too)
a. Uploading image -> works fine
b. Image crop -> got an error:

Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 10448 bytes) in ...\wp-content\mu-plugins\avatars.php on line 857

c. Going back to Users/Your Avatar -> shows default avatar
d. Looking for image on server in ...\wp-content\avatars\user\c4c -> Uploaded image is there.
e. On Users/Your Avatar /Reset -> image not deleted, for few seconds appears this error [after ~2 seconds plugin redirects user to Users/Your Avatar] (Suggestions – hide Reset button when Default Avatar is displayed):

Warning: chmod() [function.chmod]: No such file or directory in .../wp-content/mu-plugins/avatars.php on line 1211
Warning: unlink(.../wp-content/avatars/user/c4c/user-1-16.png) [function.unlink]: No such file or directory in .../wp-content/mu-plugins/avatars.php on line 1212
Warning: chmod() [function.chmod]: No such file or directory in .../wp-content/mu-plugins/avatars.php on line 1211
Warning: unlink(.../wp-content/avatars/user/c4c/user-1-32.png) [function.unlink]: No such file or directory in .../wp-content/mu-plugins/avatars.php on line 1212
Warning: chmod() [function.chmod]: No such file or directory in .../wp-content/mu-plugins/avatars.php on line 1211
Warning: unlink(.../wp-content/avatars/user/c4c/user-1-48.png) [function.unlink]: No such file or directory in .../wp-content/mu-plugins/avatars.php on line 1212
Warning: chmod() [function.chmod]: No such file or directory in .../wp-content/mu-plugins/avatars.php on line 1211
Warning: unlink(.../wp-content/avatars/user/c4c/user-1-96.png) [function.unlink]: No such file or directory in .../wp-content/mu-plugins/avatars.php on line 1212
Warning: chmod() [function.chmod]: No such file or directory in .../wp-content/mu-plugins/avatars.php on line 1211
Warning: unlink(.../wp-content/avatars/user/c4c/user-1-128.png) [function.unlink]: No such file or directory in .../wp-content/mu-plugins/avatars.php on line 1212

This error is annoying because user getting it on every time he clicks the button to reset default avatar.
2. Crop problem (Suggestions – when trying to make blank upload, display Error message)
a. When you don’t make browse into image just click “Users/Your Avatar/Upload” plugin shows “Crop tool”
b. Trying to “Crop” Wordpress backend interface, got an error (default avatar dissapers – shows black avatar):

Warning: imagecopyresampled(): supplied argument is not a valid Image resource in …/wp-content/mu-plugins/avatars.php on line 871
Warning: imagecopyresampled(): supplied argument is not a valid Image resource in …/wp-content/mu-plugins/avatars.php on line 881
Warning: imagecopyresampled(): supplied argument is not a valid Image resource in …/wp-content/mu-plugins/avatars.php on line 891
Warning: imagecopyresampled(): supplied argument is not a valid Image resource in …/wp-content/mu-plugins/avatars.php on line 901
Warning: imagecopyresampled(): supplied argument is not a valid Image resource in …/wp-content/mu-plugins/avatars.php on line 911
Warning: unlink(.../wp-content/avatars/user/c4c/) [function.unlink]: Is a directory in …/wp-content/mu-plugins/avatars.php on line 1212

The same problems occurs with Blog Avatar too.
Matew