Why can't I execute this command in PowerShell?

Hello,

I'm trying to execute a program using PowerShell, but didn't get it to work. Any further hints would be appreciated. Thank you.

Code:

$PsExecPath = "C:\PSTools\PsExec.exe"
$ComputersList = Import-Csv C:\Resources\Computers.csv

foreach ($Computer in $ComputersList) {
Write-Host "Processing computer $Computer ..."
."$PsExecPath" -u CONTOSO\Administrator -p P@ssw0rd! -s \\$Computer C:\Windows\system32\ccmsetup\ccmsetup.exe /uninstall
}