Okay then all, I'm fairly satisfied that this has been resolved, although I apologise for not being able to be more active.
Thank you for your help, everyone!

Thanks for the update. I will check my store when I have the chance, later. :)

Okay, sorry about the delay everyone.
So far, I've covered all the bases everyone has suggested so far, and I'm coming up empty.
Since the store worked prior to the latest update, and I don't...

Oh, sorry. I already did that. I just missed it out of the list.
Suffice to say that it didn't work. :(

When the "Get" button is clicked, the "Working" indicator flashes up for the skin of a second, and then the entire store page appears to refresh, with no acknowledgement that I have requested the...