Fixed calling PS script with two args.

wDayzManager.ps1

@@ -23,6 +23,12 @@ Param (
 
 [string]$myName = "wDayzManager"
 [string]$myVersion = "v0.7"
+
+if (($init -eq $true) -or ($update -eq $true)) {
+    Write-Error "Only one parameter is accepted - either 'Init' or 'Update'."
+    Exit
+}
+
 [string]$steamScript = $myName + ".txt"
 [string]$iniFile = $myName + ".ini"
 if (-not (Test-Path -Path $iniFile)) {