The menu is working fine with othe browsers/version
Got same error by using the online menu builder .. how can we tell if you are using the pro version .. I thought I was! Does it have to do with the code on the index.html page or the .css and .js files that the menu builder generates?
To check what version of menu you are using look into menu.js file. Product title and version is specified there.
Tigra Menu Online Builder uses free (non PRO) version of the menu during building process. You can save your results for pro version following the link in upgrade section on the last stage.