Hello John,
thanks for the quick portabilisation of the new SeaMonkey release. You have been even faster than the German SeaMonkey support team that doesn't say anything about release 2.39 on it's website.
But: After the automatic PortableApps platform update, SeaMonkey's "about:" window still tells 2.38. None of the extensions (particularly Lightning) complains about a new version. Looks like the PortableApps "update" version still is 2.38 by mistake.
Manually installing the PAF package downloaded from you website worked fine, I finally got SeaMonkey Portable 2.39.
Kind regards,
Carsten