I found a "compiler error" bug in LV 2013 SP1. Bug is triggered only in combination using paralellism with 1D array and conditional indexing (see attached file). What is more is that vi runs fine if there is no indicator connected on output. If an indicator is placed vi is runable. If you run it LV will throw a compiler error and vi becomes broken until you delete the indicator.
LV 2017 runs the vi normally without error.
OK, a bit more info...
I can reproduce this in LV13. I can't reproduce this in LV17SP1.
So somewhere in between this go fixed. The bug does ring a bell. I think similar bugs where reported. It should be possible to find a CAR in the list of fixes...