Error adding VM through Powershell: Virtual hard disk in the chain of differencing

Question

I'm trying to programmatically create a VM from a .vhd file - my code is below.  I'm getting a weirdo file not found error about disk chaining, but I've TRIPLE checked all my paths.  Help is much appreciated!!!
Thanks,
Error:
ADD-VMHardDiskDrive : 'Testing' failed to add device 'Virtual Hard Disk'. (Virtual machine ID ADC7CF7D-2EC5-4428-B27C-6EDCF29F5922)
Failed to open virtual disk 'E:\will\VMTesting\Flash.480x800.vhd'. A problem was encountered opening a virtual hard disk in the chain of differencing
disks, 'E:\will\VMTesting\Flash.vhd' (referenced by 'E:\will\VMTesting\Flash.480x800.vhd'): 'The system cannot find the file specified.' (0x80070002).
My PowerShell code:
$n = "Testing";
$directory = "E:\will\VMTesting";
$vhdxPath = "$directory\$n.vhdx";
$vhdPath = "$directory\Flash.480x800.vhd";
$vm = Get-VM $n;
if($vm -ne $null) { Remove-VM $n -Force; }
New-VM -Name $n -MemoryStartupBytes (Invoke-Expression "1000MB") -Path $directory;
Set-VMMemory -VMName $n -DynamicMemoryEnabled $true -MinimumBytes 512MB -MaximumBytes 4096MB -StartupBytes 2048MB -Buffer 20;
ADD-VMHardDiskDrive -VMName $n -Path $vhdPath;
Start-VM $n;

Answer 1

Hi Will ,
According to the error message , please try to check the chain of differencing disk via "inspect disk.." .
# Create our New Differencing Disk
New-VHD –ParentPath T:\02R2June2012\08R2TemplateJune2012.vhdx –Path T:\lab50\lab50-PSDiffDiskVM\lab50-PSDiffDiskVM.vhdx -Differencing
For creating a differencing disk please refer to following link:
http://lyncdup.com/2012/06/creating-hyper-v-3-differencing-disks-in-server-2012-with-gui-and-powershell/
Hope this helps
Best Regards
Elton Ji
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