Cannot rename dimensions after creating design table?

So I am running into a problem where I have created a design table and now want to rename a dimension for clarity in the table.

If I change it in the design table first, as soon as I exit the table I get a message that the "Column heading contains an invalid dimension name." and that SW is "Exiting design table without completing model update."

If I change it in the feature, the design table changes automatically, but as soon as I exit I get the same message.

So then I deleted the column and when I re-poened the table I got this message to "Please select the items you want to add to the design table."

So I select the dimension and it shows up in the design table again. Awesome, right? Wrong. As soon as I exited the design table, BAM, same invalid dimension name message. Why??? It is the correct name of my dimension.

So how do I go about renaming dimensions properly, when using a design table?

SolidworksConfigurations design Tables