Since nobody at Sphorium bothered to reply to my direct email about this product, I developed this workaround. It involves creating a 32-bit Windows Form which does nothing but display an OpenFileDialog box and close itself. I use C#, and here's the procedure:
1. Using Visual Studio, create a new Windows Form application named "Explorer32bit". The default name for the main form is "Form1".
2. In the VS Solution Platforms drop down, if "x86" is not listed, open Configuration Manager, select the "Active Solution Platform" dropdown list, click "New" and select "x86", accepting the defaults.
3. Now you can select the "x86" Solution Platform in VS for your builds.
4. Drag an OpenFileDialog item from the toolbar onto your design surface. The default name is "openFileDialog1".
5. Select the "openFileDialog" and in its properties window set "Multiselect" to "true".
6. Double click anywhere in the Form1 window to automatically create the Form1_Load method, and paste these lines in the method body:
openFileDialog1.ShowDialog();
this.Close();
7. Build the solution and test it.
8. Create a shortcut on your Desktop for the executable, and you're all set. When you highlight any file, the context menu will show the "Cryptology" item.
In step 5, of course the item you select is "openFileDialog1".