As existing grouping samples are bit complex and difficult to debug, I implemented a new application having a single group with mysql and php cartridges and a startup dependency: cartridge.mysql, cartridge.php: [1]
This application is activating without any problems. I'm now introducing additional features to this and trying to identify at which points it fails. [1] https://github.com/apache/stratos/tree/master/samples/applications/wordpress Thanks -- Imesh Gunaratne Technical Lead, WSO2 Committer & PMC Member, Apache Stratos