Convert *.sdltb file to *xlsx file through Glossary Converter

I am trying to convert *.sdltb file to *xlsx file through Glossary Converter (version 4.6.6231.26139). When Glossary Converter is launched, I receive error message saying "Can't detect MultiTerm, using tbx as termbase format instead". Then when the settings window opens, no MultiTerm is not listed. Is there any remedy for this? I looked through SDL Communities, but couldn't really find the solution.

I would appreciate it if you could either provide me with the solution, or point me to the right page on Communities.Thank you!