The Schrödinger Extension seems to be not ready for KNIME 5.1. NodePit lists the extension as available for latest KNIME 4.7. The Schrödinger Knowledge Base seems to confirm this observation.
Our Suite 2023-3 is going to be released very soon, probably this week, and it’s compatible with KNIME 5.1. You can check the version compatibility on this page: Support.
See the directions to install our extension: Support. The zipped update site is available in the Schrodinger installation under $SCHRODINGER/knime-/data directory.
Best regards,