if you failed building with proguard and ant

First, you sould move source files(project directory) to "c:\". If there is empty space in the path(like "Documents and Settings"), ant makes error.

Then type "ant release" at the root of moved project directory. If error message like "...cant run jarsgner..." shows up, you should add java path(for example "C:\Program Files\Java\jdk1.6.0_22\bin") to system variables 'path'.