When I type my ip, localhost, or 127.0.0.1, I get the local apache server, when I type
http://localhost:8080/sabnzbd/ I get the sab web page.
Will try a full path, though I can of like the ~ shorcut. I was using a link to show the proper folder. Will let you know what happens with the full path, when EB finally downloads something more.
Came across another difficulty, I have set all my episodes to medium quality (I'm happy with 400 MB file for most shows). However nothing is dl, and I know that newzbin has those files. I decided to change one to
any and it dled a 1GB mkv file (which can't use on my dvd player). The 400 file was even posted before the 1 GB on newzbin Any ideas on this?
The relative vs absolute issue is probably caused by not handling a path starting with a ~ correctly. To get an absolute path, use the full path starting with a /.
I'm looking into the issue you are reporting about not being able to connect to sabnzbd. A work around might be saving the nzb files in a dir and let sabnzbd look at that directory but I agree it isn't a solution 
.
When I look at the log you send me it isn't an issue with login info. The first request the episode butler makes to sabnzbd fails. It doesn't even come far enough to check for credentials. I'm not really familiar with a Mac, but do you have some kind of firewall running? Are there any other restrictions to connecting to localhost by a process? What happens when you use 127.0.0.1 or your own ip-adress (assuming sabnzbd also listens on that adress) instead of localhost?
(I'm posting this reply in this thread instead of the mail so maybe another Mac user can shed its light on this problem)
