project created 16:9, but changed to 4:3 mysteriously...

[enyi]

Hi I have this very weird situation: (I hope it is not weird to some of you!)

When I created the a video project I selected the setting as 16:9, so all the frames are 16:9.

At some point, the project preview panel suddenly changed to 4:3!

Even more weird, all my images (I have one image per frame) (including the ones I had before and added later), when viewed in the Effects Manager in the main window, show ratio 4:3. BUT when I right click on the frame to bring up 'moving path', in there the preview window shows the image as 16:9!! I checked 'keep respect ratio' for all images in moving path. Since this is where I edited the moving path, I guess this is saved somehow.

Then when I preview the video in the preview panel in the main window, all my images are 'narrowed'-- they lost their initial ratio and became slimmer! Also all of my title clips, created under 16:9 (and shows 16:9 in moving path), are narrowed and some even cropped out.

What should I do~~~ I already finished the video and spent a LOT of time on it, I don't want to redo it all over~~~

Thanks for your help, I'd really appreciate it!!!