Total Posts: 30
I’m not sure if this applies to your scenario (migrating from 1.3 to 1.4.2), but I suffered the Magento Connect blank page issue when I created a copy of a production site to act as development site (on another domain or subdomain).
After a lot of search, I found out that downloader/pearlib/pear.ini file has a lot of folder locations hardcoded. And not only it was needed to replace each location, but also the number preceding that location, wich represents the length of the location string.
As an example, if you find on your pear.ini file the following:
s:56 represents the length of “/var/www/vhosts/mydomain.com/httpdocs/downloader/pearlib”. So if you’ve changed your URL to a test subdomain, you need to change both the folder location string, an also the number that represents the string’s length:
Hope that helps,