Path isn't valid! (EffRunApp.class)

I wanna execute a Linux command with this Skript "Code":
every 5 seconds:
		if text from "URL" contains "proxys-in-queue: 1":
				if text from "URL" contains "proxys-online: 0":
						run script at "/home/Cloud-BETA/proxys/proxy-01/start.sh" 

but every time i get "[skUtilities] v0.9.2: Path: '/home/Cloud-BETA/proxys/proxy-01/start.sh' isn't valid! (EffRunApp.class)" as Error!