What I meant is that I don't know if some specific system directories have special access rights and if "Macintosh HD" could be one of them (apparently not).

Anyway, the problem exists on Linux as well. So I'll be able to investigate and fix it.
This bug is specific to the "raw files" section ("comics" and "books" are not affected).

I found the problem for the logs. It'll be fixed in the next release (and I'll update the FAQ then).
In the meantime your logs will still be written in the folder from which you launch Ubooquity (which is, as explained earlier, not necessarily the one containing Ubooquity.jar).

To sum up: notwithstanding the log location bug I just mentionned, Ubooquity "lives" in only one directory where it writes everything (logs, database, settings, cached files, theme folder...). This directory is the working directory. By default this is the one where you are when you launch Java. You can override it with the "user.dir" setting.

I reproduced the problem you have with the logs.
Investigating...

I am not familiar with the way Apple filesystem works, but I suppose you could try to add quotes around the path:

"/Volumes/Macintosh HD/comix"

Also, are you using the web admin page or th desktop interface to configure Ubooquity ?

Yes, you can do that by creating a specific theme and hiding the download button in the CSS.

Once you have generated your new theme (or chosen the theme you want to edit), you have to modify the books.css and comics.css files by hiding the #details_download id.

#details_download {
    visibility: hidden;
}

I did it for the default theme, you can download the modified version here.

Hi,

thanks for the offer, but Ubooquity is closed source software.
Although I am not against the idea of opening it someday, I have no plan to do it so far.

So for now, the only way to customize Ubooquity is through themes. I also plan to make the Javascript part (so mostly the online reader) customizable in the next release.