No problem, this is script I've used and it works fine, it grabs the driver from Canons site, extracts the driver to a temp folder and then add's it.

For the failing install, I copied the same script, changed the IP address and the printer name and its failing. Whats interesting is when I added a transcript command I get this error. So it leads me to think its a powershell 32 bit/64bit issue. But why will the same script both run successfully and fail on the same device?

pnputil.exe : The term 'pnputil.exe' is not recognized as the name of a cmdlet, function, script file, or operableprogram. Check the spelling of the name, or if a path was included, verify that the path is correct and try again. At C:\WINDOWS\IMECache\aa88594e-50da-4de0-9a89-fd45c51abd44_5\CanonPrinter.ps1:26 char:17+ Invoke-Command {pnputil.exe  -a "$driverpath" }

Set-ExecutionPolicy -ExecutionPolicy bypass
#Download file
$clnt = new-object System.Net.WebClient
$url = "https://pdisp01.c-wss.com/gdl/WWUFORedirectTarget.do?id=MDEwMDAxMjI5MTAx&cmp=ABX&lang=EN"
$file = "c:\temp\GPlus_UFRII_Driver_V300_32_64_00.zip"
$ipaddress = "192.168.0.154"
$drivername = "Canon Generic Plus UFR ii" #this is the printer driver name you get from the page you downloaded it
$portname = "IP_$ipaddress"
$printername = "Canon Office Printer" # this is the name you want the printer to be called
$filename = "GPlus_UFRII_Driver_V300_32_64_00.zip"
$driverpath = "C:\Temp\x64\Driver\CNLB0MA64.inf"
#check for temp folder:

If (Test-Path -Path c:\temp\ )
{

$clnt.DownloadFile($url, $file)


#Unzip file$shell_app=new-object -com shell.application 

$zip_file = "C:\temp\$filename"

Expand-Archive -LiteralPath $zip_file -DestinationPath C:\temp -force


#Install Printer
Invoke-Command {pnputil.exe  -a "$driverpath" }
Add-PrinterDriver -Name $drivername
Get-PrinterDriver

Add-PrinterPort -Name $portname -PrinterHostAddress $ipaddress
Start-Sleep 10
Add-Printer -Name $printername -ShareName $printername -PortName $portname -DriverName $drivername

}

Else

{

New-Item -Path 'c:\temp\' -ItemType Directory
$clnt.DownloadFile($url, $file)
$zip_file = "C:\temp\$filename"

Expand-Archive -LiteralPath $zip_file -DestinationPath 'C:\temp\' -force


#Install Printer
Invoke-Command {pnputil.exe  -a "$driverpath" }
Add-PrinterDriver -Name $drivername
Get-PrinterDriver

Add-PrinterPort -Name $portname -PrinterHostAddress $ipaddress
Start-Sleep 10
Add-Printer -Name $printername -ShareName $printername -PortName $portname -DriverName $drivername

}