The ‘attributes’ section won’t load when adding a product in woocommerce?

Hi,

I’m using woo commerce, along side ‘pinpoint booking system’. I’m trying to add a attribute to a ‘variable’ product type. I’ve tried it with other product types and the ‘attributes’ section won’t load. It appears with a loading symbol, and I can see the form, but I can’t actually add any attributes. I’ve included an image below:

Thanks in advance for any help!