Adding the "plug_profilegallery" directory fixed the problem with uploading images to the Gallery.
But I notice a new problem...
When a user uploads for the very first time. When they select and picture and clicks "Submit Gallery Entry", the screen goes white, and I need to refresh the page in order to see the image in the gallery. When that user uploads for a second time it works fine.
I deleted the images from the gallery and deleted the user folder in the "plug_profilegallery" directory. I tried to uploads a image again, and the same thing happens, the screen goes white and I need to refresh the page in order to see the image in the gallery.
So something wrong is happening when a users tries to upload when that user doesn't have a directory for them created under the "plug_profilegallery" directory.
Is this a know problem? Is there a way to prevent it?
Robert