assis@security:~/Downloads$ sudo dpkg -i iscan_2.29.2-1~usb0.1.ltdl3_i386.deb
(Reading database ... 177333 files and directories currently installed.)
Preparing to replace iscan 2.29.2-1~usb0.1.ltdl3 (using iscan_2.29.2-1~usb0.1.ltdl3_i386.deb) ...
Unpacking replacement iscan ...
dpkg: dependency problems prevent configuration of iscan:
 iscan depends on libltdl3 (>= 1.5.2-2); however:
  Package libltdl3 is not installed.
dpkg: error processing iscan (--install):
 dependency problems - leaving unconfigured
Processing triggers for desktop-file-utils ...
Processing triggers for bamfdaemon ...
Rebuilding /usr/share/applications/bamf.index...
Processing triggers for gnome-menus ...
Processing triggers for man-db ...
Errors were encountered while processing:
 iscan
assis@security:~/Downloads$