有關tigertext這套類似What's App軟體

有人有抓嗎？
我在Marketplace上找不到這套軟體~
可是用另一套 Marketplace search 就找得到耶
但是就是不能安裝耶.......
我已經升到 7712 版本了~
是太新的問題嗎？
~"~

出現以下訊息
“This might be because your phone
software needs to be updated the app is
exclusive to a different mobile provider, or
the app is not available in your region.”

接著還有這個訊息
“We're sorry, but we can't complete your request right now.
Try Launching Marketplace again. If the
problem continues, check back in a little while, or try restarting your phone.

Error code:805a0194

請問要怎麼解決啊？！