From the Premiere Elements Information FAQ http://forums.adobe.com/thread/1042180
•You MUST use an account with Administrator Privileges to run Premiere Elements
•(Doing Run as Administrator http://forums.adobe.com/thread/969395 [says Encore and also for "All" versions of Premiere] will sometimes fix "odd" errors)
•What version of Premiere Elements? Include the minor version number (e.g., Premiere Elements 12 with the 12.1 update)
•What operating system? This should include specific minor version numbers, like "Mac OSX v10.9.4"---not just "Mac"
•Has this ever worked before? If so, do you recall any changes you made to Premiere Elements, such as adding Plug-ins, brushes, etc.? Did you make any changes to your system, such as updating hardware, printers or drivers; or installing/uninstalling any programs?
•Have you installed any recent program or OS updates? (If not, you should. They fix a lot of problems.)
•What kind(s) of image file(s)? When talking about camera raw files, include the model of camera.
•If you are getting error message(s), what is the full text of the error message(s)?
•What were you doing when the problem occurred?
•What other software are you running?
•Tell us about your computer hardware. How much RAM is installed? How much free space is on your system (C:) drive?
•How many and what speed are your hard drive(s)... ie 5400rpm or 7200rpm or?
And some other questions...
•What are you editing, and does your video have an orange line over it BEFORE you do any work?
•Which version of Quicktime do you have installed?
•What is your exact brand/model graphics adapter (ATI or nVidia or ???)
•What is your exact graphics adapter driver version?
•Have you gone to the vendor web site to check for a newer driver?
•For Windows, do NOT rely on Windows Update to have current driver information
•-you need to go direct to the vendor web site and check updates for yourself
•nVidia Driver Downloads http://www.nvidia.com/Download/index.aspx?lang=en-us
•ATI Driver Autodetect http://support.amd.com/en-us/download/auto-detect-tool
-and a fix for at least "some" ATI crashes https://forums.adobe.com/thread/1553342
On what computer operating system is your Premiere Elements 9 running? Have you installed the 9.0.1 Update? If not, please do so.
Make sure that you have the latest version of QuickTime installed on your computer with Premiere Elements 9.0/9.0.1.
And, make sure that your computer's video card/graphics card driver version is up to date according to the web site of the manufacturer of the card.
If it is and you still have your problem, then delete the BadDrivers.txt file. See the following link for the how to which includes
a. Making sure that the Folder Option Show Hidden Files, Folders, and Drives is enabled so that you can see the path to the BadDrivers.txt file
b. Following the path to the correct hard drive save location to find and delete the BadDrivers.txt file.
Depending on the progress of the troubleshooting and if proven needed in this case, please post video properties besides the .mov file extension.
Please do not hesitate to ask if any questions or need clarification on any of the above.