Neuron

Red Ochre was right. Turns out I did have quite a few effects installed. Thought they would have been removed when uninstalling PDN as they were before. After installing the latest version it seemed ok but PDN must have been still in memory. Anyway, once I deleted the effects folder and reinstalled the latest version everything worked fine. Thanks again to all who replied.

I hadn't added any effects but I just updated to the latest version and that seems to have solved the problem. Strange that I wasn't given a notice of the newer version. Usually pops up right away. Thanks for your time.

I have tried to repair and remove, restart and reinstall. Ver. 4.0.9 Nothing added. Win 7 64

I am aware that the image is not directly affected but placement of objects becomes very difficult. I have never had this problem before.

Ego Eram Reputo: Can you remind me of the rules when using images in posts? Do I have to link to them or can they be uploaded directly?

I have just installed the newest update and have experienced pixels shifting erratically during image editing in several zoom levels. I'm using Windows 7 64bit, Dual-Core AMD CPU, NVidia Graphics, 4GB Ram