Error Updating Drivers with Update Script - "You cannot call a method on a null-valued expression"

[pulseOXE]

I've been using this for a bit now, and just updated my hosts NVidia driver, and tried running Update-VMGpuPartitionDriver.ps1 with the correct flags for my VMName, and I'm getting an error.

Here is what I am running: C:\Users\xxxxx\Downloads\Easy-GPU-PV-main\Update-VMGpuPartitionDriver.ps1 -VMName GamingVM - GPUName AUTO

Here is the output: Mounting Drive... Copying GPU Files - this could take a while... INFO : Finding and copying driver files for - to VM. This could take a while... You cannot call a method on a null-valued expression. At C:\Users\xxxxx\Downloads\Easy-GPU-PV-main\Add-VMGpuPartitionAdapterFiles.psm1:33 char:17

• ... $ServiceDriverDir = $servicepath.split('')[0..5] -join(' ...

•             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

  • CategoryInfo : InvalidOperation: (:) [], RuntimeException
  • FullyQualifiedErrorId : InvokeMethodOnNull

You cannot call a method on a null-valued expression. At C:\Users\xxxxx\Downloads\Easy-GPU-PV-main\Add-VMGpuPartitionAdapterFiles.psm1:34 char:64

• ... iveletter" + "" + $($servicepath.split('')[1..5] -join(''))).Repla ...

•                      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

  • CategoryInfo : InvalidOperation: (:) [], RuntimeException
  • FullyQualifiedErrorId : InvokeMethodOnNull

  Any ideas on what is going on here?

[remy33]

Same issue here, it prevented me from login in using Parsec. I also couldn't create a new machine since I get the same error.

[remy33]

OK, After some debugging, I found out that I have a typo while writing the GPU name. As well as the original question has a space:

I've been using this for a bit now, and just updated my hosts NVidia driver, and tried running Update-VMGpuPartitionDriver.ps1 with the correct flags for my VMName, and I'm getting an error.

Here is what I am running: C:\Users\xxxxx\Downloads\Easy-GPU-PV-main\Update-VMGpuPartitionDriver.ps1 -VMName GamingVM - GPUName AUTO

The default behavior should be to exit if there are missing parameter or set it to AUTO as default but not ignore it.