Help! I keep trying to upload a picture in projects and I keep getting an error. Any suggestions?

Even when you do get it the right size, it sometimes takes a few minutes to load. It's there but you just see a square or something (I don't remember). Just wait a minute, go to another page and come back to your page and it will probably be there.

I think too that the pic is too big for uploading, try what suedewsbury said and try again

Is the picture too big? Try reducing it and having another go, You don't have to start all over again - you can edit your project.