PE10 has crashed a number of times and will not allow use of Ken Burns. Searches retrieved information on how to assign more system memory in previous versions of PE, but the methodology explained could not be used for PE10 as the relevant actions could not be located.
What worked in a previous version of PE:
> Edit > Preferences > General
In addition, the guidance suggested 1.5 should be enough but if the recommended amount for PE10 should be different (particularly for Ken Burns), advice would be most welcome.
The single most important thing to remember when working with photos is to size them as close as possible to video resolution. For standard video, that means never using a photo larger than 1000x750 pixels in size. For hi-def, you can go as high as 2000x1500, but this will put added stress on your computer.
That's why it's also vital to render (press Enter) whenever you see red lines above the clips on your timeline. When the red line is green, your timeline is rendered, your system will perform more efficiently and you'll much less likely run out of memory.
Adequate RAM is also important. For pre-Windows 7 operating systems, 4 gigs is good load. For Windows 7 64-bit 4 gigs is a good minimum -- although 6 might keep things flowing a bit better if you're using the 64-bit version of the software.
Does this sound like your workflow, Misty?
Welcome to the forum.
What are the complete specs. of your computer, including the OS?
For the Still Images, this ARTICLE goes into much more detail.
Also, for a PC, after one gets past the initial "checklist," in this ARTICLE, there are many links on setting up one's computer for a video-editing session, and for tweaking one's OS for max results.