Hello,
Unfortunatelly, the gdal library of SNAP is not working on 32bit. Furthermore, this exception is affecting also some SNAP functionalities, like GPT. In this moment, the only solution is to uninstall SNAP, and to install it again without the S2TBX module (after that you can even update it, but remember not to install the S2TBX). We are working on a solution that will be available in the next release. Thank you for your understanding.