---
title: "RDKit conflict with Lead Discovery"
slug: "connector-ld-spo-troubleshooting-rdkit"
updated: 2026-09-22T13:12:32Z
published: 2026-09-22T13:12:32Z
canonical: "docs.discngine.com/connector-ld-spo-troubleshooting-rdkit"
stale: true
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.discngine.com/llms.txt
> Use this file to discover all available pages before exploring further.

# RDKit conflict with Lead Discovery

### RDKFunc error when using with the latest version of Lead Discovery installed (or any other Spotfire extension using RDKit) (Fixed since 3.4.6 version)

If you get this error:

![Spotfire LeadDiscovery incompatibility error](https://connector.discngine.com/images-doc360/ld_spo/Error-LeadDiscovery.png)

It seems that you are using an RDKit extension that conflicts with ours. To solve that, just change the ExportInMemory preference to be False, and restart the Web Player and the Analyst.

Doing this, the export will be done using the external process `Discngine.MoleculeConverter.exe` and result will be integrated in Spotfire as usual.