IE won’t let me write or manage – shuts me down

Whenever I log-in to my site on IE, it lets me, then when I attempt write or manage anything I get this error:

Internet Explorer cannot open the Internet site http://www.alpacafarmgirl.com/wp-admin/post.php?action=edit&post=253.
Operation aborted

with a big red “X” on it.

and it shuts me out of the whole site. I have been using Firefox instead but now I am having a problem with WP on Firefox erasing all my whitespace between paragraphs. (separate issue but using Firefox is no longer an answer to this problem for me.)

I have erased cookies, temp files, etc., rebooted, tried IE without add-ons, nothing is working.

Any ideas? I need help BAD!