Key point: references to "talend csv100jar" (often seen as talendcsv-1.0.0.jar / talendcsv-100.jar variants) usually surface when Talend Studio or a Talend job attempts to resolve a built-in CSV library that either isn’t present in the local Maven cache or was replaced/updated by a patch. The phrase "download patched" implies trouble obtaining the JAR or concerns about applying a patched version.