On the instance deployed at http://www.heatmapper.ca loading a dataset and clicking on the table tab causes an error and produces a strangely formatted table that only has individual characters in each cell in the table.
Thought it might be a issue with data formatting but then I checked the built-in test data and it also happens with that. The error for example 1 is:
DataTables warning: table id=DataTables_Table_3 - Requested unknown parameter '7' for row 0. For more information about this error, please see http://datatables.net/tn/4
This is a very generic error from datatables https://datatables.net/manual/tech-notes/4
Also had the same issue in Firefox and chrome so I don't think it's on my end.