Media pending, audio works, please help.

Question

Suddenly Adobe premier does't show any video any more (in any window of the project layout).
All clips are linked correctly and are verified by the project windows - all audio of the clips plays correctly.
This happened after (several manipulations after) it crashed while exporting media containing stacked titles and two simple .tiff pictures (I know it dosn't like stacked pics, so I don't use them much as it always crashes.
Now, the project worked when I removed my still picture stack, so I added them again one-by-one. This time it didn't give a crash message but simply stopped showing ANY video.
I am in a terrible situation now as I have deadlines to meet.
I have reloaded the project, I have tried prevous projects, they all refuse to show any video.
All clips are linked, the time line moves and plays audio, the effect control recognizes all clips.
HELP !! Please.

Answer 1

Thanks for your question:
1.  I layer still images for example to have several small pics in different places over the video. That's the most straightforward - in this case, 1 or 2 layers, might work without crashing.
2. I can use png, tiff, jpg, the resut is the same.
3. Situation gets worse with increasing file resolution (size or colour depth).
4. Adding simple FX like cropping (which is the most used FX for still pics) will crash very early.  I can can crop stacked video all day with no crashes.
In the current example I was stacking 6 titles of one word, made within Adobe Premier, and making them move around using position and rotate. That worked fine, and then I added two images made of small screen shots of single colour shapes. Everything went ok, even the rendering (which is where often it crashes already). Then the crash I describe above happened when the export encoding was taking place.
Now, before my post I had re-loaded and it still didn't work, and no project would display video media - which is why I panicked - now I reloaded a second time and it works again. But for how long?
Clearly I need to get gto the bottom of this, but how to proceed ?
So far I have not had a crash by using video only - incuding stacked videos.
One thing I noticed which might be a clue is that when trying to import a high resolution picture, Adobe Premier simply gives an error message that the file is to big and unsupported - 'Final Cut' in that situation would ask if it is ok to use a lower resolution and proceed to downsize it.
All of this is daily bread and was so simple and stable with 'Final Cut', I cannot believe that Adobe would have difficuty doing these things - maybe it is an Adobe/Mac thing, but then I have the fast i-Macs (2 of the 27"models with 24GB cache) , Intel chips and all the recommended grahics cards and kit.
Is there perhaps a system configuration using external discs for selected functions which would help?  Or is there a configuration that defines cache versus disc, etc?
Thanks to all (and Adobe if you read this) if you can help - can't believe I am the only one.
Best wishes,
marco