How to resolve the ‘Invalid package identifier provided’ error in Magento?
The Invalid package identifier provided error occurs when there is a problem with the installation of an extension through Magento Connect Manager.
Often it is caused by the fact that the chosen extension is provided as a beta release.
The switch between the stable and the beta states can be easily completed through the Magento Connect Manager->Settings->Preferred State.
Alternatively, you can install an extension using the following shell command:
./pear install Magento_extension_key
In the above command line replace Magento_extension_key with the exact key for the chosen extension.
In the following example it is shown how to install a classic theme extension through the command line:
./pear install magento-community/magento_classic_theme_free
downloading magento_classic_theme_free-22.214.171.124.tgz ...
Starting to download magento_classic_theme_free-126.96.36.199.tgz (3,687,973 bytes)
.......................done: 3,687,973 bytes
install ok: channel://connect.magentocommerce.com/community/magento_classic_theme_free-188.8.131.52
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