Here is a list of possible problems and how you can resolve them:
PROBLEM: An item (such as a picture) does not display in the thumbnail list or the current item display area.
PROBLEM: Cannot print an item or list.
SOLUTION: Try giving ScrapIt Pro more memory by selecting the ScrapIt Pro 4.0 icon in the Finder and doing a “Get Info” on it. Change the preferred memory size to a higher number.