Oh no, sorry about that!
Here's another workaround while we're fixing the problem:
1. Click on the small user icon (beside the envelope and speech bubble icons) that you see just below your username and avatar (the one you see on the left side of your posts)
2. In your profile page (not the one inside Account Management), click on "Forum Profile Information" from the left-hand menu's "Modify Profile" section
3. In the page that loads, choose "I will upload my own picture" and then click on the "Choose File" or "Browse" button to select the image file you want to use
4. When you're done, click on the "Change Profile" button
If this still doesn't work, kindly send me your new avatar image file via PM and I will manually change your avatar for you.