after rendering the video, I have accepted to upload it to Facebook. however once I have provided my login for Facebook, there is a pop up saying 'publish to Facebook wall: login successful but then no option to accept this with a 'tick' button. there is only a 'cross' sort of exit button and if I press this everything disappears and nothing is published. I have to then re render the video which takes 90 minutes for this to happen again and I don't know what other options there are to make it upload successfully.
The upload is a 3 stage process, first you sign in, then video is made and finally your video is uploaded. If you press the X at any point this will cancel the upload. You will see a "Congratulations, your video has been uploaded" when it's uploaded. Only click the ticks, if you click a X it stops the process.
You should see the bar at the bottom of the screen move along as your upload progresses (it's a light blue bar that moves along)
As Mike suggested I would test this with a short test file to see if that works for you as it could be the size of your video exceeds the Facebook API limit and that's stopping the upload process.
How can you tell if your scribe is getting too big to upload
Unfortunately, you wouldn't know unless facebook failed to accept it. But it looks like facebook's upload limit is currently 1.75 GB so that is unlikely to be a problem unless you have a long video at a high resolution.
If you have a PRO membership, try rendering the video to your hard drive and then uploading it to facebook, that way you can detewrmine if the problem is happening during rendering or during uploading.
Internet connection and upload speed might be problems.
I have the same issue, after I log in it come up with this box straight away and there's no other option but to press the cross.
After logging in you need to wait for a little while and the text there should change from 'Login successful' to 'uploading'. Wait a bit longer for the video to upload and a message saying that your video has been sent to your Facebook wall will appear.