Almost all built-in functions and VIs will not execute their code if they have an error in their error input. The logic for this is that if you have an error, you don't want the rest of the code to execute (because something's wrong) and you want the source of the error to remain in the error cluster so that you can log or handle it.
This is a common pattern in LabVIEW and if you want the node to ignore the error, you can use the Clear Errors VI before it and Merge Errors after it, although this is a construct I personally dislike.
Two additional points:
- If you get an error in one of the properties, you can configure the node to execute the rest of the properties or not.
- I believe the only primitives which always work are the ones which close references (like a file reference or a queue reference).
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