I was wondering if the error cluster wire will use the UI thread, instead of the Standard, if I'm showing an "Error In" Control or "Error Out" Indicator on the front panel. As a general rule I use the error cluster wires to set the procedural process in my top level VI.
Conversely, if I don't show an Error Ctrl or Indicator in Top level VI, that VI won't use the UI thread. This is a compiler decision, I'm just asking in general.
Rich J