You need to restart the Studio after installing required third-party libraries - 6.2

Talend Open Studio for MDM Release Notes

EnrichVersion
6.2
EnrichProdName
Talend Open Studio for MDM
task
Installation and Upgrade
EnrichPlatform
Talend MDM Server
Talend MDM Web UI
Talend Studio

After you install any required third-party libraries, you need to restart the Studio for your updates to be taken into account.