Paypal link Bulk Upgrades

I've set up bulk upgrades and when a user is on the bulk upgrade page and chooses from the upgrade packages, the top "Subscribe" link seems to just link to back to the current page "/wp-admin/admin.php?page=psts-bulk-upgrades" rather than

The other ones link fine to

What's strange though is from looking at the html source the action for all of the forms does point correctly to and the subscibe link is just a submit button for the form. so seems a bit odd.

latest versions of Pro Sites and Multi-DB. Let me know if you need anymore info.