I see your profile picture
The problem is that it's confusing between profile picture and avatar - your avatar photo is what shows up when you post. Here's a tutorial for that:
Splitcoaststampers - Help
Your profile picture is what shows up here:
Splitcoaststampers - View Profile: CaffeineCrafter
You're getting an error because you already successfully uploaded a profile pic, so once you load into the avatar field you'll see it when you post and be good to go!