MSP Common is a collection of libraries required by other MageSpecialist extensions.
Please DO NOT install this extension manually unless you know what you are doing, in most cases it will be automatically installed by other extensions by Magento Connect. And most of all DO NOT UNINSTALL it from your website before asking your developer if it’s safe to do it.
Extension is published on MagentoConnect at this page,
In case of trouble, please contact our support team at magespecialist.it