JDK-6U37 version to work with all the work recommends.
I am a working version of JDK 7-u9 had struggled for 12 hours, and the result has confirmed that the sign does not apply.
Seems to suffer was the beginning of a sign not apply somehow generated apk file not found.
Minutes you who work with JDK7-U9 version if JDK-6u37 reinstall your your new computer to boot and start is a good idea.
The which did not work problem will be solved.
Recommend the version of the JDK-6u37 Note, defer to rebuild from scratch.