virtualbox.org

I created a new Ubuntu VM, installed the guest additions, and rebooted successfully. Sometimes though, after I shutdown the VM inside Ubuntu, I get the following error message:

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VirtualBox.exe - Application Error
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The instruction at 0x535f6e6f referenced memory at 0x535f6e6f. The memory could not be written.


Click on OK to terminate the program
Click on CANCEL to debug the program
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OK Cancel
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After I click OK, VirtualBox.exe and its child windows close.

Has anyone else run into this problem?

VirtualBox Installation Details:
- Version 4.3.20 r96997
- The latest extension pack was downloaded and installed through the VirtualBox Graphical User Interface

Host Info:
- ThinkPad T400
- Windows 7 SP1 x64 EN-US (aka Microsoft Windows Version 6.1 (Build 7601: Service Pack 1)
- 8 GB of installed memory

Guest Info:
- Ubuntu 14.10 Desktop 64-bit edition (the ISO name is "Ubuntu-14.10-desktop-amd64.iso")
- 1024 MB of base memory

Please see Minimum information needed for assistance. The most interesting part is attaching the zipped VBox.log of your guest.

I would up the display RAM to something more reasonable, say 64MB. You must be getting (and ignoring) a warning right now about the small 16MB figure you're currently using.

You are probably using an AMD GPU and your VM has 3D acceleration enabled. Read here