Importing Data from Excel

So I copied first chunk into text box. This time there was no ‘need a new text box message’. Pressed ‘import’ button. Looked at collection/database page. Still nothing in there. Pressed ‘Preview’, got the following come up in the developer console -

Loading the code for the Form page. To debug this code, open ctvn2.js in Developer Tools.There was an error in your scriptTypeError: e is not a function .

I am not a programmer, so not sure what this means. Any clues?