When I go to purchase something, so I select the item from the pool, click payment method (I am going to pay from my steam inventory), and then it pops up with "One moment please Checking inventory consistency, please wait." Waiting for a while (I have waited around 15 or so minutes now) nothing happens, and it stays there. This also happens with trying to withdraw items from my shop. Is this a bug, new feature, or...?

It appears to be fixed, and now it says to enter my steam trade url into the settings page.

I got the same problem, can wait 1 hour and nothing happen.

Same problem

same problem o;

Me too, same problem

Edit:
I do have set the trading URL in the security settings, but it's just not doing anything.
The request to the '/trade_offer_purchase' page just returns:

["success":false,"error":"TASK_QUEUED"]

maybe that will help someone locate the bug.

Edit 2:
I've investigated the issue a bit, and it seems like the "sets" parameter in the before stated request:
... sets: $("#sets").val() ...
could be the problem, cause there is no element with an id of "sets" so, probably there's something wrong on the serverside page processor.

same problem here :\

I've got the same problem, but i did place the url in correctly.

Same problem