Minor Improvements

* Made Refresh() more robust - when an error is encountered, the layer(set) is reloaded automatically.
* JS errors are now output to console instead of alerts.

scripts/PsIsOpen.vbs

@@ -0,0 +1,12 @@
+Function IsProcessRunning( strComputer, strProcess )
+    Dim Process, strObject
+    IsProcessRunning = False
+    strObject   = "winmgmts://" & strComputer
+    For Each Process in GetObject( strObject ).InstancesOf( "win32_process" )
+    If UCase( Process.name ) = UCase( strProcess ) Then
+        IsProcessRunning = True
+        Exit Function
+    End If
+    Next
+End Function
+wScript.Echo IsProcessRunning(".", "Photoshop.exe")