Can't set OLECMDTEXT in VS2012.

The following implementation taken from this list some time ago no longer seems to work in VS2012 for a dynamic command.  Works fine in VS2010/2008/2005.

public static void SetText(IntPtr pCmdTextInt, string text)
{
	Microsoft.VisualStudio.OLE.Interop.OLECMDTEXT pCmdText = (Microsoft.VisualStudio.OLE.Interop.OLECMDTEXT)Marshal.PtrToStructure(pCmdTextInt, typeof(Microsoft.VisualStudio.OLE.Interop.OLECMDTEXT));
	var menuText = text.ToCharArray();
	// Get the offset to the rgsz param.  This is where we will stuff our text
	//
	IntPtr offset = Marshal.OffsetOf(typeof(Microsoft.VisualStudio.OLE.Interop.OLECMDTEXT), "rgwz");
	IntPtr offsetToCwActual = Marshal.OffsetOf(typeof(Microsoft.VisualStudio.OLE.Interop.OLECMDTEXT), "cwActual");

	// The max chars we copy is our string, or one less than the buffer size,
	// since we need a null at the end.
	//
	int maxChars = Math.Min((int)pCmdText.cwBuf - 1, menuText.Length);

	Marshal.Copy(menuText, 0, (IntPtr)((long)pCmdTextInt + (long)offset), maxChars);

	// append a null character
	Marshal.WriteInt16((IntPtr)((long)pCmdTextInt + (long)offset + maxChars * 2), 0);

	// write out the length
	// +1 for the null char
	Marshal.WriteInt32((IntPtr)((long)pCmdTextInt + (long)offsetToCwActual), maxChars + 1);
			}

The declaration of the command in the .vsct file is as follows:

<Menu guid="guidMyCmdSet" id="IDMX_MY_MENU" priority="0x0150" type="Menu"><Parent guid="guidMyCmdSet" id="IDG_CTX_MY_NODE"/><CommandFlag>DefaultInvisible</CommandFlag><CommandFlag>DynamicVisibility</CommandFlag><Strings><ButtonText>MyButtonText</ButtonText><CommandName>MyCommandName</CommandName></Strings></Menu>