I noticed when I uploaded my Photoshop Touch file to the Creative Cloud, it was given an extension of .psdx. What does this mean, and can I open this file in Photoshop?
PSDX is the file extension used by Photoshop Touch. You can open PSDX files in Photoshop CS5, as long as you have installed a plugin first.
After you download and install the Creative Suite plug-ins (for Photoshop Touch and Adobe Ideas), you can open files created with Adobe Touch Apps directly within certain Adobe Creative Suite applications. You can also save native Creative Suite files to Creative Cloud, and then access them in from within your Adobe Touch Apps.