I am working on a magento 1.9 e-commerce project tried to install a plugin through magento connect and this is the error i get :
SSL: no alternative certificate subject name matches target host name 'magento-community'
This occours when i insert the extension key
and this happens when i try to upload the extension package:
CONNECT ERROR: Package file is invalid
Invalid package name, allowed: [a-zA-Z0-9_-] chars
Invalid version, should be like: x.x.x
Invalid stability
Invalid date, should be YYYY-DD-MM
Invalid channel URL
Empty authors section
Empty package contents section
Best Answer
It's not safe to use Magento connect for installing extension , click this link for more information.
in the worst case, if you want immediate solution , Alternatively you can install the extension through FTP (like FileZilla). You can paste the extension key in this unofficial link and you can download the extension files. Let me know if you find any problems in this.
Note : As this is unofficial 3rd party site, there is no guarantee about security. but i tested many extensions, i did't faced any security problems....