Can't create address relation

[Remix]

When I create address relation and try to send data to OSM, JOSM writes "Send data to server", progress indicator moves again and again, but nothing happens.
I trys to create relation in web interface, then edit it in JOSM. When I add kind with type of "is_in" (links my street(a6) relation to parent city(a3)), problem retry. Before add "is_in" relation saves normally.

[bastiK]

Upload fails when you set a certain tag? This would be really strange. Try again after some time.

If it is still the same, save the change and attach the file here.

[Remix]

OSM Data with problem relation

[Remix]

Yes, when i add relation of type a3 to street relation (a6), set role "is_in", upload fails. I attached data file to ticket. I says about last relation in the file:

• <relation id="1205100" action="modify" timestamp="2010-10-03T08:08:19Z" uid="298755" user="Remix" visible="true" version="3" changeset="5941688"> <member type="way" ref="79500971" role="street" /> <member type="relation" ref="1106711" role="is_in" /> <tag k="address:a6" v="Мичурина ул." /> <tag k="address:type" v="a6" /> <tag k="index_name:ru" v="Мичурина ул." /> <tag k="name" v="Мичурина ул." /> <tag k="name:be" v="Мичурина ул." /> <tag k="type" v="address" /> </relation>

I can't upload data, after add this relation.