I saw a couple of threads about this, but there weren't any solutions and they were from at least a year or two ago.

When trying to price the items in my shop by hand, I get that message after I click the process button. Is there any way around this? I thought clearing my cache may do some good, but I was wrong.

I should point out that I'm using windows xp on a really old computer while my main is out of commission. It's only a few items, and I don't really mind waiting until my main is working again, though it is pretty frustrating.

What browser are you using?

The latest chrome, I think.

Ok, just making sure you weren't using IE. For right now until a programmer looks into this, you might try clearing your cache and restarting your browser. If that doesn't help, you may want to see if any add-ons or virus protection is affecting this. To do that, just temporarily disable your add-ons or virus protection to see if those are the root of the problem. If that doesn't work then the only thing I can suggest is to logout, uncheck the enhanced security checkbox (or check then uncheck again) and log back in.

Otherwise that is the extent of what I can help you try!

Hm, none of those seemed to work out. Thanks though c:

Do you have a vending machine open in multiple tabs (same machine or not)?

Nope.