I will suggest couple of more heat and trials.
Have patience to apply these,
Steps:
- Untick the build automatically (Project-> Build Automatically) in eclipse and clean your project.
- Build it again.(Right Click on the project+Build Project)
- Export Project.
- Select Android Export.(auto aligned for you)
- Choose your key. provide the password. alias should come in the list.(Be sure about the caps lock). Sometimes we give correct password but due to caps it always fails ;)
- Let me know if it works for you.
Hopes this will help you.