Unpacking crafty-books-medium (from .../crafty-books-medium_1.0.debian1-2_all.deb) ...
Selecting previously unselected package crafty-books-medtosmall.
dpkg: regarding .../crafty-books-medtosmall_1.0.debian1-2_all.deb containing crafty-books-medtosmall:
 crafty-books-medtosmall conflicts with crafty-books-medium
  crafty-books-medium (version 1.0.debian1-2) is present and unpacked but not configured.

dpkg: error processing /var/cache/apt/archives/crafty-books-medtosmall_1.0.debian1-2_all.deb (--unpack):
 conflicting packages - not installing crafty-books-medtosmall