I've never used the album but rather upload photos directly to my posts. In the reply box, click on the "Upload a File" button and select the pictures you want to upload from your hard drive. Once highlighted, click the "Open" button and you'll see the upload progress bars at the bottom of your reply box. If you want the pics to show in large size, wait for all the progress bars to finish and select the "Full Image" button below the "Insert every image as a.." script, otherwise the pics will load as thumbnails by default.
It's a bit clunky to get used to but not bad once you get the hang of it.