Trouble relocating the htmlets directory
The "root" you get from your FTP program is probably not "the" filesystem root, but simply your home directory or somethign similar. Ask your host what the actual file path is.
Alternatively, you can do this: $wgHTMLetsDirectory = "$IP/../../htmlets"; that's "two up from where the wiki is, and then into the htmlets dir".
What I don't quite get is... you want to open ftp directories? but hopefully not in a why that would allow others to manipulate your wiki files. that would be kind of bad...
Great, thanks Duesentrieb. The "two up"-approach worked. No, I will open up ftp only for one or more external developers ... I need a little help, as you can gather ;-) and will soon be looking around for someone who'd be interested for pay.