Hi @cloud230 ,
This is likely caused by a mismatch between the “KNIME Conda Integration” and “KNIME AP Core” versions, which was a known bug (see my explanation here). To fix it, please ensure that the versions of those features match. You can do so by updating to the latest patch version or, if you must stay on 5.2.5, use the dedicated patch update site—e.g.,
https://update.knime.com/analytics-platform/5.2/5.2.5
This will ensure that the plugin versions remain in sync and fix the “Testing conda installation…” issue.