Impossible to import custom xar containg pages with accent.

Hi everyone,

After a few attempts, I've seen that is impossible to import a custom xar containing pages with accents. I've followed the procedure describe here and nothing works. It's not because of the program of compressing I use cause I've met no problems when my custom xar didn't caontain pages with accents.

The error Tomcat is :

java.lang.IllegalArgumentException
        at java.util.zip.ZipInputStream.getUTF8String(ZipInputStream.java:299)
        at java.util.zip.ZipInputStream.readLOC(ZipInputStream.java:238)
        at java.util.zip.ZipInputStream.getNextEntry(ZipInputStream.java:73)
        at com.xpn.xwiki.plugin.packaging.Package.Import(Package.java:377)
        at com.xpn.xwiki.plugin.packaging.PackageAPI.Import(PackageAPI.java:199)

The problem is there ONLY with custom xar. Using the API Export/Import, so in order to do a whole backup, the problem doesn't appear. Once again, I've followed the official procedure in order to create my custom xar. Last thing, I'm using Windows environment.