I downloaded the “downloader.php” and had it installed on my magento 1.5.1
called it and it starts’ fine.
I inform my database name/password and it went all steps:
Magento Connect Manager Deployment
then I got this message:
Magento has been downloaded earlier.
When I click the Continue button,
the site went to my default “not Found” page (error 500)
and now nothing works.
I restore a backup for the scripts only (not the database) and all was working again, on the old version.
Try to do the update again and the same error happened.
Any ideas where to start looking for an issue?
ON the error log I got it:
[Wed Dec 14 06:55:10 2011] [error] [client 187.xxx.xxx.xxx] SoftException in Application.cpp:256: File “/home/angelcom/public_html/shop/downloader/index.php” is writeable by group, referer: http://my_Site.com.br/shop/downloader/downloader.php?action=download
Hope that will help