How to get around the auto plug in issues with MAMP:
You need to activate your ‘File Sharing’ in sys prefs.
Select ‘Options…’ button and tick ‘Share files and folders using FTP’.
Make a note of the FTP address (00.0.0.0 format).
Click ‘Done’.
Return to MAMP Pro.
Highlight your ‘wordpress’ site folder in ‘Hosts’ ‘General’ tab.
Select ‘Permissions…’ button.
Change ‘Owner’ popup button to ‘www’.
Change ‘Group’ popup button to ‘www’.
Click ‘Set’.
Finally get back to the plug in page where it asks you for your FTP details.
Enter your FTP details.
FTP Host will be just the number you noted earlier 00.0.0.0
Username and password is the database Username and password you set up in phpmyadmin for your wordpress site.
I hope it works for you all now.
Electronicink