Hi @HugoCtrlX1 ,
What has likely happened here is a callable has been created and configured in your scheduler by an application that has been uninstalled. This often happens with the Motion or EtherCAT Master application.
To correct this error, either reinstall the missing application, or remove the configured but missing callables from the scheduler. As an example, I installed and then uninstalled Motion and EtherCAT Master. The callables prefixed with _placeholder_ are the issue.
As of ctrlX OS 2.6.8, callables can be automatically managed so that this error will not occur.
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