Sorry if this has been posted a few times, I'm new here.

I cannot export my videos at all, as of about 2 days ago. I only ever really export to avi and mov files, and I've got about 320GIG of free space on my computer, and it is a new computer with some decent hardware.

IT doesnt seem to even start the exporting process, you just complete the export settings and it crashes with the usual "Adobe Premiere CS3 has found an error and needs to close".

To make things weirder, it had been working more than fine a few days prior to this, which was after I had my codecs updated by a tech. This is, according to them not the problem, the codecs.

Any thoughts on what this could be? And how to fix it?

Don't let techs mess with your computer anymore, it is most definitely a codec issue and I would be pretty sure about that.

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Don't you have a restore point in your computer ? If so ty it and see if it stills crash or not .
It might be that project, have you tried other projects with different videos ?
Good luck