I am using Opus Ver. 12.2 x64. When I preview an excel file in the viewer pane the software freezes until I open a new lister. However, if I then try to preview another excel file, it freezes yet again.
Does the same happen with the same files in Explorer's viewer pane?
Also, does the title just above the viewer pane indicate which viewer is being used? (It will be in brackets, after the file name, if the viewer pane is wide enough.)