Refnum error

Hi mathew,

you have connected two different clusters. That will never work...
In the main VI you use a cluster with several strings, whereas the subVI expects a cluster of references (of different types...)! You have to create a suitable cluster in the mainVI...

P.S.:
Did you know there's an English-speaking LabVIEW forum at NI.com?

Edited:
Yes, you knew that forum already, as can be seen here! Please note: when creating double posts in several forums it's always a good idea to mention that by providing links to other related posts...