Hi Community,
We did release a change a little while again that was intended to address the problem with the "Submit" button on the Custom Item Specifics interface but we are still receiving some reports of that button not functioning when certain attributes/values are entered, primarily for Internet Explorer users.
Our engineering team is investigating what additional changes will need to be made to fully resolve this problem and I will continue to update this thread as additional information becomes available.
If you are encountering this problem while using Internet Explorer, you may be able to work around the issue in the mean time by switching to the Firefox browser, which can be downloaded free of charge from http://www.mozilla.com
We have received a couple reports of this nature from Firefox users as well so switching to Firefox will not necessarily resolve the problem for everyone, but we have seen instances where this error occurs in Internet Explorer and not Firefox.
-Mike