The Magnum Opus program and all of its support files (dictionaries, grids etc) is packaged as a zipped archive file called MagnumOpus.zip If your computer doesn't know how to unpack a .zip file, there are plenty of free unzip programs on the Internet. Simply Google  Free unzip program for Windows  or  Free unzip program for Macintosh  and choose one of the many available.
The program unzips to a single folder called MagnumOpus which you can locate anywhere you choose on your hard drive. Inside this folder there is a file called MagnumOpus.jar (or just MagnumOpus if your computer has been configured to not display standard extensions.) You can start the program by double clicking the icon associated with this file, or you can create a Shortcut which you can place on your desktop to provide a quick and easy method of starting the program.

What if the program doesn't start?
If you have this problem, then it will most likely be caused by one of the following:-

DOs and DON'Ts.
It should be pointed out that this entire program is the work of just one person. Although I have subjected it to a large amount of testing, I am quite confident that it will NOT be free of bugs, SO...


Please note :

MagnumOpus has been discontinued. It is no longer available.