I assume that you had previously install the printer and that it is working OK.

Here are a few possibilities:
1. You do not have enough hard drive space available.
2. You are trying to print an image that is very large.
3. You are trying to print at a density far higher than 300 (dpi) dots per inch.

What Operating system or you using (XP, 89, ME)?
What Printer are you using?
What software are you using to print?
Have you tried other software for printing?
What is the file size for the photo that you want to print.
What type of print file are you trying to print (.jpg, bmp, tif)?
Have you moved the photo files from the camera and put them on the computer, or are you tring to print the file right off of the camera?