hazmatt Kindly share the screenshot of error you are getting
Also, as It seems as per your badge which is JA Pro, You will require to upgrade to Ultimate developer as per pricing plans and access levels/membership entitlements here in order to download Jomsocial and related extensions
Full details can be seen here for the respective plan. You may also wished to mail at sales@joomlart.com in order for respective team to address your query