Try going to Edit/Preferences/File Handling and checking "Always maximize compatability for Photoshop (PSD) Files". This will increase your file size, but it should cause PhotoShop to save a flattened version of the file along with the layered version. The flattened version should open in PSP. If you need to work on a particular layer from Photoshop in PSP it's often quickest to just copy and paste between the two applications. Hope that helps, - Ken Heronheart -