Hi all, We have this deployment package of our project that we deployed in all our testing and production (Live) env. and all worked fine. We deployed the same package on a machine parallel to the Live one, for backup, and when we click to start the service we get an unresolved error: Error: Could not find or load main class file:"D:.Mendix.Apps.XXXXXXXX.Service.runtimelib.org.yaml.snakeyaml.jar"" -Dorg.osgi.service.http.port=8082 -cp D:\Mendix\Servers\6.8.1\runtime\felix\bin\felix.jar;D:\Mendix\Servers\6.8.1\runtime\lib\com.mendix.xml-apis-1.4.1.jar org.apache.felix.main.Main at Mendix.M2EE.RuntimeRunner.StartServer(Boolean strictValidate) at Mendix.MendixService.Service.OnStart(String[] args) The same machine has other apps and they start without any issues (console version 4.5.1). Did anyone of you already encounter this kind of error and how can it be resolved ? Many thanks in advance