Thanks. Got it. Trying to export to FTP server. I never HAVE had any luck exporting any Web galleries to my web site. I have to export them to hard disk and transfer via 3rd party FTP software. I would like to simplify my workflow and thought this may be a way. I installed the sample plug in to export to FTP server, but I get the same error as with the web module "Export" to my website. It always hangs up on "cannot create folder" even though I am not wanting it to create any folder.
Consider trying "FTP Aggregator" - it's a (free) plugin (that I wrote) which auto-uploads exported files (well, any files actually), as they're exported - a java app actually does the FTP'ing, so not subject to the same "idiosyncrasies" as Lr's built-in FTP support.
That's what I do, because using SDK FTP functions makes my Lightroom more prone to crashing.
I mean you may have the same "cannot create folder" error if the problem is more fundamental/core but it's another option you can try..