Don't know how to add comment to Issue 1110 (hope taking same title will do the
trick).

See also T1251 for detailed.

I confirm that critical issue in Win7. Here is my config:

Windows 7
Outlook 2007 + MO SP2 (do not work without SP2 ether)
Gpg4win 2.0.3
GnuPG 2.0.14
GpgOL 1.1.1
GPA 0.9.0

Message body is decrypted correctly while there's no way to handle attachment:
try "view, open, save as" crashes outlook.