Just to say, I agree with Adam about unreliable behavior of Vue.
Actually I doesn't launch it anymore because each time it crashes or I find a new bug that drives me mad and frustrated.
And I do not use complex scenes, it's totally unpredictable like a software with memory fault at each line of code. Depending of the memory state, sometimes it works sometimes not ...
I have many issues not resolved in e-on bug database.

Anyway, I have a Mac PPC 2x2GHz 10.4.11, Vue6 + plugins.
So I'm not hurry to update to Vue 7 which is basically the same software.