VirtualBox error

[mowan...@bigpond.com]

Hi, 

I just downloaded the ova file for Sage 6.6 and opened it using VirtualBox (by double-clicking the file and after the file was loaded I right-clicked it and selected "Start" from the right-click menu provided) and I received the error (I am on 64 bit Windows 7, if relevant, running the latest version of VirtualBox, 4.3.26):

Failed to open a session for the virtual machine Sage-6.6.

Unable to load R3 module C:\Program Files\Oracle\VirtualBox/VBoxDD.DLL (VBoxDD): GetLastError=1790 (VERR_UNRESOLVED_ERROR).

Result Code:	E_FAIL (0x80004005)
Component:	Console
Interface:	IConsole {8ab7c520-2442-4b66-8d74-4ff1e195d2b6}

How do I overcome this error?

Thanks for your time,

Brenton

[Volker Braun]

Are you using some sort of theming hack that modifies DLLs?

https://www.virtualbox.org/ticket/13504

[Brenton]

Yeah I have, any ideas of how I can inactivate it such that this works? I used Uxthemepatch to install extra themes and I can't seem to find any uninstall options (including in Revo Uninstaller, CCleaner & Control Panel). I don't mind loosing these new themes if I gain Sage use as a result.