looks like you don't have BER.pm installed. It's a perl module.
You could install with CPAN (as root)
perl -MCPAN -e "install Convert::BER"
Be prepared to answer a few questions if you have never run CPAN before.
or you might grab and install it manually from here http://search.cpan.org/src/GBARR/Convert-BER-1.3101/
but you may or may not need to satisfy some dependencies with this method.
SmokePing will likely list the required Perl modules and any other dependencies in the README/INSTALL files so probably best to read those first.