Annoying Non-wroking bug report+critical error

I recently was just working on my Alice world, on a dell running windows xp, and all of a sudden when i tried to save my world, It said there was a critical error. I tried to submit it, but as usual, bug submit didn't work. I was hoping if I gave you the files, with the needs to be submitted bug, you might be able to determine the problem. Thanks.

[aikmin]

I am not able to load your file. Alice fails to load something related to your Alien object. Please check your source code again. You can start by removing your alien object and all links to the object. Please download Alice 2.2 at http://www.alice.org/index.php?page=.../alice2_2_info

Originally Posted by aikmin

I am not able to load your file. Alice fails to load something related to your Alien object. Please check your source code again. You can start by removing your alien object and all links to the object. Please download Alice 2.2 at http://www.alice.org/index.php?page=.../alice2_2_info

so, remove the alien object? ok. but how? use the alice 2.2 instead?
I can't lod it either