I have a big application in which I read from 30+ Siemens S1200 PLCs using the S7 node, version 2.2.1.
Today, I saw the update to 3.0.0, and clicked on it.
After rebooting, every single machine was broken, saying there was no configuration for each S7 node, or something like that. On closer inspection, the Variables tab marked each and every single address field in red, as if the format was wrong (I hadn't changed the previous one).
I went to Github to check the changelog, but the last changelog is from 6 months ago, for the 2.2.1 version (the one I was running).
In the end, I had to roll back the server by using yesterday's backup file.
Did anyone else have the same issue? Could you solve it without rolling back the update?