Welcome to the forum.
This FAQ Entry might prove useful. It starts with a checklist on getting PrE running best, then goes into some tips on setting up one's computer and OS for a video-editing program. It finishes with some troubleshooting tips, with links to other articles and to tools to help in the process. http://forums.adobe.com/thread/792580?tstart=0
Since you mention "longer Projects," I would pay special attention to the Memory & Resources area in that FAQ Entry. Sounds like it could be an issue there.
These questions below may be for a different product... but the information you need to supply is the same, for the products you use
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What model of camcorder is this video coming from and what format and resolution is it? Version 10 does not work well with non-camcorder video.
Your computer may also be underpowered. How fast is your processor, how much RAM do you have and how much free, clean, freshly defragmented space is on your hard drive?
If the app was working earlier and has gradually started misbehaving, I will only ask you to look at what has changed over the time. If the app had any issue with the machine, it would have come out on Day 1. not this slowly.
Suggest you to roll back gradually and see at what stage it stopped working fine. There are a lot of things that I could point to.
1. Applications that have been installed over time: Some of them could be meddlesome
2. Antivirus software - However useful they are made to look, they can potentially bring your machine to halt. This is because the way they work, they will have to look at each file, folder and each registry entry to decide if it is malicious or not. So they end up running services monitoring everything on your computer.
3. The Hard Disk: Over time, this can start going bad. Another truth that is not discussed very openly . They all have read-write cycles - a lifetime. And of course start ageing (Bad sectors, permanent fragmentation, boot sector corruption etc.)
Some of these can be remedied. Defragmentation might help, Uninstalling/Disabling the AV software might also help.
I know this is an old thread but I FOUND the answer.
MAPPED DRIVES for your Documents folder in Windows. Set the Documents folder of your Windows Vista/7/8 back to the default one (located in the C:\Users folder) and volia, it loads with no crashes!
Hi- can you explain how you fixed this? I'm having a problem with mine crashing. How do I do what you said about mapped drives? I don't know what that means or how to do it. Thank you!