On April 6, 2010 Sage Software issued the following compatibility information. This document shows which versions of MAS90 and MAS200 are compatible with Windows 7.
Note that only versions 4.3 and 4.4 are being supported and that older versions will not be supported under Windows 7.
In order to ensure that MAS90 and MAS200 are Windows 7 compatible, be sure that you download the hotfix which we’ve posted online.