I would like to report an issue when using a Null object in sequence operator.
You can find attached an example scene I've prepared so you can check it as well.
Using a geometry object, everything seems to work fine.
Unfortunately, when switching it to a Null object that is using the same dimensions - the equation returns an error.
I know the first thing you'll catch for will be the random parameters that I've used. If you remove them and start playing around with the counters in the Sequence node you'll get the same result.
However, please let me know if I'm missing something in the build-up logic.
Kiril Alexandrov, RedVertex Team