I know this has been discussed A LOT. But so far nothing I have seen suggested has helped me out much. Basically, and simply, Premiere is dropping my render files. It happened in CS6 (when I first started using the program) and now in CC. If I close the project and reopen, 9 times out 10 the render files will be gone, forcing a re-render. These are all files dynamic linked to After Effects, so it ends up taking 1-2 hours to re-render with a 4 minute video.
And now something I noticed yesterday, is that I am loosing my dynamic link renders while working on the project. I understand that when I change something in the After Effects it will update, and therefore drop, the render in Premiere, but now I am loosing my renders by simply clicking in the After Effects compotisition (sometimes, not always). Not cool. On top of that, I also end up loosing renders for comps that I didn't even touch. Loosing one render file seems to set off a chain reaction that forces all the other renders to offline as well. It's a waste of time.
Windows 7 64 bit Ultimate
Premiere Pro CC (updated)
Intel Core i7 3770k
256gb SSD (apps installed)
7200 rpm media drive (for footage)
16 gb ram
Any insight would be appreciated. I hope Adobe of aware of this problem and is trying to work something out. New features are great and all but a solid, stable system is even better.
There is still no definitive cause for this. It happens for some users, but we don't yet know why. You may want to consider exporting DIs out of AE instead of using DL.