I have version 220.127.116.11 of Magento and cannot seem to install any extensions. I get the following message:
Couldn't resolve host 'magento-community'
Any assistance would be appreciated
Actually your extension Url is not complete url. so you can try this url to download extension
after download install it manually.
I never use Magento connect ever; fact is I disable it and delete the downloader for security. I would manually download it:
than put in the key.
Magento Connect can cause problems or also u can install it using SSH
./mage install Key/package name
I had same problem with content transfer app but when I restarted the OS , it resolved the problem.