clip plays differently on 2 machines . . .

[Davidk]

I've a .mov file to insert into a project. It plays differently on 2 machines, both running X8 Ultimate on win7 sp1.
On one machine,
1. individually it inserts to the timeline, and plays as a clip, but when run as a project the clip image immediately goes to the Black and white of relink. Relinked, the clip just plays 'black' as tho there was nothing there. rendered to an mpg file, same result.
2. inserted into a project, it fits into the overlay space in the right place, but plays black. same re-link occurrence as in 1.

on the 2nd machine,
the .mov file inserts OK plays OK no relink about it.

Why? As far as I can determine there is no difference between the machine setups.

Davidk

[Ken Berry]

Do you have the same version of QuickTime on both computers?

[Davidk]

Ah, thinks I, a lead I had not thought of. But . . yes, the same version of QT (7.7.7(1680.95.51)) is on both of them. The PC failing is a desktop, and the one working is a laptop. Both have win 7x64, and X8 ultimate sp1. The desktop machine has been painstakingly re-built over the last 3 weeks after a motherboard failure and C drive replacement on the dead end of July.

The project itself has a series of photos and clips in it, including several from the same source as this failing clip, and they all play fine on the desktop. This one clip - which actually is in the middle of others - is suddenly breaking. This is a screenshot of the clip file taken from the laptop - in an overlay track, but the clip performance is the same when stand-alone in the main timeline - in the project, and the clip properties box.

Davidk