Marketpress Unable to create Variations

Hi, On the last product added http://singlesinthecity.com.au/store-2/products/join-us-for-friday-night-at-the-stables-bar/ and possibly others, when trying to add variations to the product, I add the Variation, (either on listed) only has 2 items, Loyalty and 12 Month, Loyalty is $54 and 12 mth is $59, Once I click add variations, page refreshes and nothing happens, It goes back to "this is a unique product without variations"
The plugin has only recently been updated I think, I have had issues with iThemes Builder and marketpress on other sites previously so I hope this is not some sort of conflict.