08-08-2011 12:17 PM
The dependency is on BBM6 for the use of the BBM WebWorks API
If you have BBM6 installed on your 5.0/6.0 device then the WebWorks API will work.
The reason why they say that it is only compatible with BB7 is because BBM6 is installed by default on 7.0. There are some dependency checking measurements they want to build in before they say it is officially ready for BB5/BB6.