Error during the installation of the softBTS

Hi everyone,   During the installation of the softBTS the following error incurred:   root@ubuntu:/# aptitude install gnu-smalltalk osmo-st-openbsc-test couldn't find any package whose name or description matched "osmo-st-openbsc-test"   while gnu smalltalk has been installed. can somebody help me with this?   Thanks and regards Priyanka