unexpected error in PowerShell if statement

I created a script to pull JPEG snapshots from 2 IP cameras. For me to keep them organized I added some lines to check the date and create a folder matching it. The script also checks if the folder exists and if it does, should skip to the snapshot capture. Everything works fine as intended but it seems for one reason or another the script still tries to create the folder and shows and error in my PS console that the directory exists.

$chk_path = Test-Path "C:\SnapShots\$((Get-Date).ToString('yyyy-MM-dd'))"
$Make_SnapShot_Folder = New-Item -ItemType Directory -Path "C:\SnapShots\$((Get-Date).ToString('yyyy-MM-dd'))"
$Camera_A = (new-object System.Net.WebClient).DownloadFile('http://ift.tt/2nDpGFK',"C:\SnapShots\$((Get-Date).ToString('yyyy-MM-dd'))\Camera_A$((Get-Date).ToString('HH-mm-ss')).jpeg")
$Camera_B = (new-object System.Net.WebClient).DownloadFile('http://ift.tt/2nDpGFK',"C:\SnapShots\$((Get-Date).ToString('yyyy-MM-dd'))\Camera_B$((Get-Date).ToString('HH-mm-ss')).jpeg")
if (-not ($chk_path) ) {
write-host "C:\SnapShots doesn't exist, creating it"
$Make_ScrapShot_Folder
} else {
write-host "C:\SnapShots exists, Saving SnapShots"
}
Camera_A
Camera_B