One column doesn't sort with the other columns

[Boygroucho]

Firstly I'm pretty new to Excel (2013) and trying to teach myself by trial and error and using google.
I have created a table with several columns and rows but whenever I select all the data and try to sort it the last column doesn't sort along with the others.
If you select all the data the option in "DATA/SORT" is greyed out.
I've searched but can't seem to find an answer.
I'm sure its something obvious.
I have attached the file - its the last column, "Link to failure" that somehow seems disconnected from the rest.
Thanks

[dourpil]

When you're in your table, press the DESIGN tab. You'll see on the left that for the most part, your table is called Table1.

However, place cursor in a cell that corresponds to your last column and... it's another table. Select Table2, click "convert to range" (you're in the right tab already). Now place cursor in Table1 and resize it. Should be good to go!

[Boygroucho]

Brilliant thanks for your help.