Fixing .pxe file errors for 6.1

[Cefixen]

Now that 6.1 version is out I'm getting some errors when I'm running the .pxe file for creating new virtual machines. Hope someone could help me out, cause I'm stuck on this.

Exception setting "LaunchVMProcess": Cannot convert the "System.Object[]" value of type "Object[]" to type "array".
+ $vm.LaunchVMProcess($vsession, "", "") | Out-Null
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (:) [], ParentContainsErrorRecordException
+ FullyQualifiedErrorId : RuntimeException

This is what I'm getting and below are some of these variables opened for better understanding.

$vbox = New-Object -ComObject "VirtualBox.VirtualBox"
$vm = $vbox.CreateMachine($sname, $vmname, [string[]]@(""), "Ubuntu_64", "forceOverwrite=1")

$vsession = New-Object -ComObject "VirtualBox.Session"