Hello, Peter:
Please try this:
In Firefox, enter this into the address bar and press Enter:
http://www.nodexlgraphgallery.org/NodeXLSetup/Smrf.NodeXL.ExcelTemplate.vsto
Firefox should offer to save the file for you. Go ahead and save the file somewhere on your computer. (Do NOT choose to open the file.) Once you save it, you should delete it. You are not going to use this file; this is just to test whether your computer can download the file that NodeXL needs.
Were you able to download the file, or did an error message pop up during this test?
-- Tony
Please try this:
In Firefox, enter this into the address bar and press Enter:
http://www.nodexlgraphgallery.org/NodeXLSetup/Smrf.NodeXL.ExcelTemplate.vsto
Firefox should offer to save the file for you. Go ahead and save the file somewhere on your computer. (Do NOT choose to open the file.) Once you save it, you should delete it. You are not going to use this file; this is just to test whether your computer can download the file that NodeXL needs.
Were you able to download the file, or did an error message pop up during this test?
-- Tony