The current builds are the initial public builds (103 MS 17 / 143 MSP 17).
If you have the classic/basic MS, not MS Platinum, "Right-click the display (Preview) and choose Save Snapshot to File to save the current frame as an image file".
If you have Platinum, check that you have "Show Toolbar" selected (right-click the Preview to see).
edit: good that you found it in the meantime ;) I prefer to use only PUM on both.