Critical Error when Starting Vista Guest

[colinncox]

I have been getting a critical error when I start my Vista guest. I have included the log file when booting. I have updated to Snow Leopard, but this was happening before the upgrade. Any help would be appreciated.

[vbox4me2]

All I see is a black screen.....

[colinncox]

That is all I get with a message that doesn't show up in the png. There is also a log file attached.

[vbox4me2]

What is this message? logfiles don't say much if there is a Guest message.

[colinncox]

I will try and get a screen shot next time I boot it up and get the error.It virtually tells me to send the png and the log file to virtualbox, and that it is a critical error, to quit. I am not at that computer at the moment. The last thing I did before I left home was revert to the original settings of the Snapshot and it booted OK. But sometimes it does boot OK and others it doesn't.

[colinncox]

Here is the screenshot I got today, this occurs as the guest is ready to go to where the green flashing bar comes up. All I did was close the guest down by clicking on OK and then restarted the guest. I then got the message that windows had not shut down properly, with the options to start in safe mode etc. I started normally and it worked OK.

[Perryg]

<snip> from your log file.
RAM: 2048MB RAM, available: 778MB
Guest assigned 536870912

You do not have enough RAM to do what you are trying to do. You can't assign more than 50% of the available RAM to the guest.