Two things may be causing that “uploader full” problem.
1. The dimensions of your pictures may be too large.
Load or open the pictures, one at a time, then click on the “Resize Picture” tab and if it is greater than 6” or 7” in either direction, …… then resize it. Or, you can reduce the size by "cropping it".
2. The camera might be set for high resolution, such as “Portrait Mode”.
If your picture has a high pixel count ….. then click on the “FILE” tab in your Photo Program and then click the “Save A Copy” feature and save it “For E-mail or Web View” and then be sure to select "Standard View" …….. and then upload those saved pictures.