Unable to locate Tape Library in Retrospect 7.7.562

I am using Retrospect version 7.7.562 for Windows. I could find a readme file along with the application that says "RET-235: Fixed a crash (elem.cpp-1138 assert) that could occur when Retrospect sent a cleaning cycle command to a tape library while another operation was running." But I am unable to locate any tape library. How does this happen? What should I do if the crash happens?
