Some people have experienced problems with Retro High-Res Export using Photoshop CS3 due to the fact their filenames have lower-case extensions, eg .jpg instead of .JPG. Photoshop CS3 scripting seems to be fussier about this than earlier versions and the solution is to change the extensions from lower to upper case, which you can do in Bridge, and then try re-exporting. Read on also for how to avoid the problem in the first place. Here are the Batch Rename settings you need in Bridge (click on the images to enlarge them): This will leave the filename alone but change the extension to upper case. IMPORTANT - YOU DON'T WANT THIS... In Bridge you can rename files and "preserve" the original file name in the metadata. Wwhat you'd be doing in my second screen-shots is changing the extension of the ORIGINAL filename, instead of the current one, to upper case, which isn't going to help. Most important, you need to avoid the problem in the first place by un-checking the User Lower Case Extensions option in Photoshop preferences, as below: The screen-shots are from CS2, which is what I have installed, but hopefully they make the point. I originally wrote this on the PJ Forum and found it again with the Search feature. Chances are there are solutions to your questions or problems right there. Cheers, Ian