Validation on a code generator page is incorrect

[GoogleCodeExporter]

1.
- Try to enter some bucket name
- Click on validate, get an error
- Clear bucket name, hit enter
-> For few ticks, an error message will be shown (correct) but later it 
disappears and previous bucket name is displayed again.

2. Enter invalid bucket name and click on 'Next'
-> It looks like some default bucket data is used instead of displaying an 
error.

Original issue reported on code.google.com by [email protected] on 27 Feb 2013 at 6:21