I didn't see a post for this one yet, so I thought I'd start one. Almost every time I go to add an item to the wardrobe from the shop search (you know, you buy it, and the send to wardrobe button pops up), I get the error (Error: This item can't be moved to the wardrobe!), then if I click the button a second time, it works. This also happens when I buy items directly from main shops and special currency shops, like the Masquerade shops.

It's not an end-of-the-world problem, but it is a bit annoying...

I've had the same problem - for some reason, you need to wait a second before clicking (the same happened before if you unwishlisted the item then clicked "add to wardrobe" too quickly)