Missing Node (Row Splitter) reported although it is there

Thanks a lot for your quick response @hotzm

I basically experienced this with the workflow that MartinDDD shared in the second post to this conversation:

I also somehow ‘reported’ (unfortunately in the wrong subforum) here in this post, concerning the Rule Engine:

Having 2 different workflows from two different people (one by Martin, see above, one directly created by myself) what does that mean?

Is that a local problem to my machine?