I have been messing around in the board editor lately and began work on my first board. However, I soon realized that I couldn't upload a board image. I used the action menu to upload the board. Today, I looked through the forums and discovered that Mac Users, like myself, cannot upload via flash. So now, I have no way of uploading card images. Is there something I missed, or is it an actual problem?

Yeah - you have to do it directly from the design page.  Right click on "actions," then "upload."

I tried that, but there is only an option for neutral images and board images. There isn't anything for cards.

Assuming you have cards enabled, you can upload them directly from the card tab page.  Don't know why it works there and not other places, but..

It still doesn't appear to work. Is there like a resolution or image type i need to worry about? They are all 200 by 200 and 2 are in png, 1 in jpg and 1 in gif.

What browser are you using?  I haven't had any problems recently in Chrome (Lion and possibly Mountain Lion).

I was using Safari on Mountain Lion. Anyway, I had already used my old decrepit and dying PC to quickly upload the Cards.

I've been known to do that before.. Just know you don't need to now.