I am attaching an updated version of the wacs_quickinsert.js file that you should replace your current one located in the Commands directory within the Configuration directory referenced in the common installation issues file:
common_installation_issues.pdf
Note the common installation issues is referenced just to get the location of the Configuration directory. It is not necessary to delete the Win/Mac FileCache fileunless there are any js errors that occur after making the change to the wacs_quickinsert.js file.