Always ask jar file when installition is running, how to make it correct install in my phone, SE W950i

This application actually great..but, there's no emoticons as like Yahoo Messenger, no conference, and couldn't add some friends...I hope this application would be make a new version for the best features..as soon....thanks

It'd better have "Expand/Collapse Group" feature because scrolling the whole list to find an ID takes a lot of time.