It's a non-specific error that means something is wrong somewhere.
You'll need to do some troubleshooting to figure out exactly what's up.
Can you burn to a folder on your hard drive rather than directly to a DVD disc?
I tried to burn to a folder and the same thing happens. I read on some of the forums that Markers could cause the problem. I have 5 scene markers and I have 5 end markers. It could be that the end markers are too close to the scene markers (Less than 2 seconds). Any input on that?
I found a work around this problem after reading several other post with similar situations, My project had 5 scenes (and 5 Scene Markers) for the menu buttons and I had originally had 5 stop Markers in just about the same place in the project. It appears that if the both those markers are too close and an attempted burn comes up with the error. So I added a 10 sec. Black still frame in between the scenes to separate the markers. After saving the project this way the burn worked. I'm sure Adobe has known this problem as well as other major issues with this program but hasn't fixed or communicated these problems to their customers,