SharePoint 2007 - stsadm error

After trying to restore a site collection from another environment I received the following error :


No content databases are available for this operation. Create a content database, and then try the operation again. To create a content database, click "Content databases" on the Application Management page, select the Web application to use, and then click "Add a content database".

Check CA and all was as expected, content DB's online.

I realised that the site collection had actually been restored before, even though it has a new name it had the same GUID within SharePoint and therefore needed to be on a new contentDB.