Error message in RS cel shop. Help Mods!

I keep getting the error message "Upload size is greater than the maximum allowed...". I've adjusted the size twice and it still doesn't work. The weird thing is the warning message doesn't tell me what the limit is so that doesn't help either. Can someone look into this so it can be more user friendly? Thanks!

I'm not sure how large your attempting to upload but most in the shop appear to be H 212 W 300 so I would resize to that and see if it uploads for you.

Thanks. But what about the actual file size, perhaps that is also something I should adjust for as well.

Well the one I checked in the shop's file showed 6.15kb if that helps.

I'm a packrat and don't sell items very often so I have never added anything into the shop.

Thanks for the info and answering my question. I am the exact opposite, anti-packrat even at work. I completely believe that quality vs quantity means so much to me. Cheers!