To verify the version of Sage MAS 90 or 200:
Level 3.7x or earlier
(I know, I know - if you aren't sure of the version, how will you know which tip to use -- just try them both).
From the Library Master menu, select Utilities and Installed Application Listing.
Leve 4.x and higher
From the Library Master menu, select Reports and Installed Modules Listing.
If you are using Version 4.1x of Sage MAS 90 or 200, you can use the Help - About menu to see the service pack and service update level as well. The output will display as 4.10.x.y where x is the latest service pack you've installed and y is the latest service update installed.