Problems with lighting in After Effects CC using Mavericks

Question

I recently upgraded to Mavericks this week and installed the Adobe patch so that AE CC will work properly. I am having issues in a comp where I have an ambient light placed in the comp with no keyframes throughout the comp. As I scrub through the timeline, the light suddenly shuts off at a specific point in the timeline. When I render the comp into a .mov file, the light is definately shut down at that point with no keyframe.
In addition, I have added a spotlight to a different comp, moved the start and end of the light to the place I need it. When I scrub through the timeline, the light is coming on about 5 seconds in advance of where I directed it to come on. When I go to a point before the the light is initiated via a keyframe, and the light is on, I click on the "eye" to disable the light and it does shut off. Neither of these were issues in AE CC before Mavericks as far as I am aware.
Can anyone confirm that they have had a similar issue or is there a known fix yet! Thanks to all of the engineers at Adobe for your amazing assistance!
Jeff Hilliard
Compudigital Industries
Rocklin, CA

Answer 1

There MUST be a simple answer to this problem....
There is a simple answer indeed.
Here it is:
The highlighted button in the Comp panel enables Pixel Aspect Ratio (PAR) Correction.
So, instead of stretching the footage horizontally, you create a Composition with the same frame aspect and Pixel Aspect Ratio as your source footage (just drag the clip to the New Comp button in the project panel and AE will automate this) and then enable PAR correction and After Effects will give you a corrected (deanamorphized) preview so you won't see it squeezed at all on a computer monitor. When you export it, it will look squeezed until you take it to the target video application. Any professional video application will handle this correctly.Millions of people do this every day, since non-square pixels are still dominant among the most popular video formats.
Even Photoshop has had support for non-square pixels (and PAR correction in the document panel) since CS (ie. Photoshop 8.0).
Note that when you turn on PAR correction (just like when you use odd magnification levels) AE switches to a draft filtering mode, which makes type and other elements look a bit jagged. Don't worry, it's just a preview.
The ideal solution, and the one video professionals rely on, is adding video output hardware to your computer, so you can connect a professional video monitor. After Effects can provide a live preview using such a set-up.
For more information on PAR, see Pixel aspect ratio and frame aspect ratio in After Effects Help.