2 Bugs Report

Bug1.
When I selcect "Quit" button during an installation proccess. In the Japanese Version there exists
such a bug: the right message to show is  :"インストール中止", but IzPack shows a wrong message "ンストール中止" which missed the "イ". The image is like the following picture:


I think the reason causes  in line 1179. 1180 of com.izforge.izpack.installer.InstallerFrame.java.
And I think the bug is in method substitute()  which exists in Line 267 of com.izforge.izpack.util.VariableSubstitutor.substitute.
But now I dont know how to correct it.
                                                                                                                                                         
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Bug2.
In UserInputPanel, during the installation proccess, when I select the "previous" button to see the previous UserInputPanel again, the previous UerInputPanel cannot show in right format.
the first time to see the UerInputPanel：

the second time to see it when click the "previous" button:


Till now I do not konw the reasons, would you like to help me. Thanks a lot!