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Description of problem:


Version-Release number of selected component:
virt-manager-0.10.0-20.el7.noarch

How reproducible:
100%

Steps to Reproduce:
1. Start virt-manager.

2. Create a new vm by "Network Install" until "step 2 of 5" on New VM window, and make sure checkbox "Automatically detect operating system based on install media" is checked.

3. Keep URL box blank, and click "Forward" button.



Actual result:
1. No response and no error shows with blank url


Expected results:
1. "Input Error: An install tree is required" Error should be shown.


Additional info:
1. This issue does not occur on latest rhel6u5.
2. "Input Error: An install tree is required" Error will be shown without checkbox "Automatically detect operating system based on install media" checked

fixed upstream by:

commit b20462d86101c17bee5abf6ef55ec633622054c2
Author: Giuseppe Scrivano <gscrivan>
Date:   Thu Apr 17 12:00:09 2014 +0200

    virt-manager: display error on an empty installation URL
    
    Closes: https://bugzilla.redhat.com/show_bug.cgi?id=1086529
    
    Signed-off-by: Giuseppe Scrivano <gscrivan>