Error 1 at Invoke Node

[KevinO298]

This VI was always working perfectly and no changes have been made to it but yet i am now seeing an error.

Any ideas?

[RavensFan]

Well something must have changed!

Okay, you are getting error 1 which means "a parameter is invalid",

You have several invoke nodes in there.  Which one is the error occurring at?  That will help narrow down what the problem might be.

Since 3 of the 4 invoke nodes are "Control Value.Set", my first suspicion is that the name of the control you typed in this VI, doesn't match the name in the Vi being called.

[KevinO298]

Receiving the error after the 3rd node. Telling me "Recipients" not found.

Is this more then likely a mis spelling between the VIs or ??

[crossrulz]

Misspelling would cause you problems.

[ben64]

And make sure you use the control label text as name, not the caption text.

Ben64