assis@security:~/Downloads$ sudo apt-get install libltdl7
Reading package lists... Done
Building dependency tree
Reading state information... Done
libltdl7 is already the newest version.
libltdl7 set to manually installed.
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
 iscan : Depends: libltdl3 (>= 1.5.2-2) but it is not installable
         Recommends: gimp but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
assis@security:~/Downloads$