This is a little similar to my last post, but different enough to warrant its own post. However, it might help to solve both.
The easiest way to put this, is that I am getting 2 - 4 sized vectors for reasonably complicated equations. However, on major simplification, I have whittled one down to the following:
Can you attach a screenshot of your settings under Tools> Options> calculations or the relevant settings from your settings file (as found in SettingsDirectory())? And perhaps include any of the mentioned equations?
Martin Kraska
Pre-configured portable distribution of SMath Studio: https://en.smath.info/wiki/SMath%20with%20Plugins.ashx