I am quite new with Drupal. I have been using PM on a hosting (hostmonster.com) with success, on D6.20 (Acquia based).

When using on my MAC, Apache 2.2.17, MySQL database server 5.1.54, MAC OS X 10.6.6. I get the following message.

Downloaded og_subgroups
A drupal install was automatically located on ftp at Sites/acquia-drupal/sites/all/modules.

Unable to create directory og_subgroups/
Unable to install og_subgroups

I believe it has to do with my setup.
- On the mac, I have started the System Preferences -> Sharing -> File Sharing, with a user that have read&write permission.
- On the PM setting, I use this user as the "stored username", localhost as the "stored hostname", I left the "FTP path" empty.
- When using update, I used the password of that user.

I was searching for similar issues, but didn't find one with solution. Your help is appreciated.

Shai