iOS Question i am get an error ...?

hi dear erel and other developers

im instal and run b4i but i have a lot possible'...im get this error when compile



im get this error on compiling first proj

Parsing code. 0.00
Compiling code. 0.02
Compiling layouts code. 0.00
Compiling debugger engine code. 0.53
Building Xcode project 0.01
Sending data to remote compiler. Error
mobileprovision file not found.



and im want to install mac buillder but im not have any link or web adress