@Sgilkehall wrote: Hello @ThomFearn , You are correct that this is a dependency mismatch. You can see in your second image that you have system apps v1.20 and have installed v2.6.3 of the EtherCAT master application. You have two options... Upgrade your system applications to v2.6 to be compatible with the currently installed EtherCAT Master Downgrade your EtherCAT Master to v1.20 to be compatible the the currently installed system applications In either case, the applications can be found in the collaboration rooms. My application also not worked. Your answer is very helpful. Thanks
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