Spinning Beach Ball Then Force Quit - Toast Not Responding!

[Anglo]

I have an .avi file that previews ok (eventually) in Quicktime but when I drag or add to burn to DVD all I get is the spinning beach ball. After waiting some time I then have to force quit which tells me that the app is not responding. Is there a quick fix for this as it has happened before? Is it codec related? I have Toast 8.0.4

Thanks

 

Edit:

Recently upgraded to Leopard from Tiger - would this have any effect?

[Anglo]

Upon not receiving any replies I investigated further and found that the file did NOT open in either Quicktime, DivX ( saying it is corrupt) and Realplayer which surprised me. However the file DID open and view ok using VLC. Meanwhile I still cannot burn using Roxio Toast. Are there any other reputable apps that I could try to encode and burn this file?

[gaper1]

if you can't open it in QuickTime, you won't be able to use it in Toast