Created attachment 628657 [details]
File generated by "save_y2logs /tmp/y2logs.tgz" after installation.

+++ This bug was initially created as a clone of Bug #903881 +++

When you reach the "Installation Settings" screen it appears the same message,
it only changes the
fast_gettext version (0.9.2 in this case).


Steps to Reproduce: 

1. Launch installation with Spanish selected as default language.
2. Continue until you reach the aforementioned screen.


Actual Results:

Error pop-up displaying the following message:


   Error
   Internal error. Please report a bug report with logs.
   Details: malformed format string - %"
   Caller: 
/usr/lib64/ruby/gems/2.1.0/gems/fast_gettext-0.9.2/lib/fast_gettext/vendor/string.rb:70:in
`%'

If you press the OK button then it appears a new pop-up:

   Error
   Internal error. Please report a bug report with logs.
   Details: undefined method `[]' for false:FalseClass
   Caller:  /usr/share/YaST2/lib/installation/proposal_runner.rb:378:in `block
in make_proposal'

And there is a third pop-up when you push the OK button:

   Calling the YaST module `inst_proposal has failed.
   More information can be found near the end of the '/var/log/YaST2/y2log'
file.

   This is worth reporting a bug at http://bugzilla.novell.com/.
   Please, attach also all YaST logs stored in the '/var/log/YaST2/' directory.
   See http://en.opensuse.org/Bugs/YaST for more information about YaST logs.

You can continue the installation if you press the Next button, but you can't
make any changes in this step.


Expected Results: 

There's should work fine and let you make whatever change you want to before
starting the installation.


Build Date & Hardware: 

The bug is present in at least the following two snapshots:

   openSUSE-Tumbleweed-DVD-x86_64-Snapshot20150312-Media.iso
   openSUSE-Tumbleweed-DVD-x86_64-Snapshot20150319-Media.iso


Additional Information: Any other useful information:

Logs attached as suggested.