VBoxManage snapshot command error

[laser]

Calling VBoxManage results in a an error and print trace information on the console. More specifically, this error occurs when calling VBoxManage with the following command syntax:

VBoxManage snapshot machine_uuid showvminfo snapshot_uuid

The trace output is:

[!] FAILED calling display->get_Width(&xRes) at line 1137!
[!] Primary RC  = E_ACCESSDENIED (0x80070005) - General access denied error
[!] Full error info present: true , basic error info present: true 
[!] Result Code = E_ACCESSDENIED (0x80070005) - General access denied error
[!] Text        = The console is not powered up
[!] Component   = Display, Interface: IDisplay, {09789f63-4525-48e5-a5e41080453b0eab}
[!] Callee      = IDisplay, {09789f63-4525-48e5-a5e4-1080453b0eab}

I have attached a screenshot of VirtualBox GUI showing machine snapshots, together with a log of the output from "VBoxManage showvminfo machine_uuid" to give an overview of my environment. However, the error is demonstated in the attached file "snapshot.txt".

A related issue is that the snapshot named "Running snapshot" (UUID: 120558e6-1526-4df3-b713-fd5d375bc47b) was created whilst the virtual machine was powered on. However, the output shown in "snapshot.txt" indicates that the machine was powered off when this snapshot was taken. Is this as intended? If so, how can a shell tool determine from parsing the output from VBoxManage whether a particular snapshot was taken when the virtual machine was powered on or powered off.

Kind regards,

laser

[laser]

Screen capture showing VB snapshots

[laser]

Screen capture showing VB snapshots (GIF format)

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VBoxManage showvminfo machine_uuid

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VBoxManage snapshot machine_uuid showvminfo snapshot_uuid

[laser]

System configuration... Host: WinXP 32; Guest: WinXP 32; VirtualBox v1.50; CPU: AMD Athlon 64 X2;