That I can not answer. What OS are you using - I am not familiar with the 8520?
Since it doesn't amount to anything more than a reload, I when ahead and tested the download again, and it worked fine. Reinstalled and everything. Perhaps it only works on OS 6 or 7? I would suggest posting to this thread and see if the host user [Hatax] can answer your question.
Just o be a good guy, here's the link to the jad file that works, found inL="http:/forums.crackberry.com/blackberry-apps-f35/starbucks-application-652629/index3.html#post6768698"] this thread.