critical error whit launcher

Csupati2, on 30 March 2014 - 12:37 PM, said: hi i have a big problem whit launcher every time i try to install wot both whit the 8.11 torrent installer and whit the wot internet installer eu.
It says check the log file for more information : 30/03/2014 12:23:42          Start update process
30/03/2014 12:23:42          Obtain patch information: target="launcher"...
30/03/2014 12:23:42          prepare http request(id = 1): url="http://update.worldoftanks.eu/", target=launcher, client_ver=unknown, launcher_ver=unknown, protocol_ver=3, lang=hu
30/03/2014 12:23:42          http request(id = 1): response info: status=200, error=0, content_len=0
30/03/2014 12:23:42          http request(id = 1): SUCCESS
30/03/2014 12:23:42          patch is available: version_from=0.unknown, version_to=8B.269
30/03/2014 12:23:42          patch file: name="wot_8B.269_launcher.patch", size=1705231
30/03/2014 12:23:42          Patch installation...
30/03/2014 12:23:42          pkg file(id = 1): name="wot_8B.269_launcher.patch", size=1705231, uncompressed_size=8940907
30/03/2014 12:23:42  ERROR:    pkg file(id = 1): what="extract file error", msg="name="E:\Programok\World_of_Tanks\Updates\wot_8B.269_launcher.patch" file="7z.dll.update" to="C:\Users\Csupati\AppData\Local\Temp\wargaming.net\wot\temp\wot_8B.269_launcher.patch""
30/03/2014 12:23:42  ERROR:    pkg file(id = 1): FAIL
30/03/2014 12:23:42  ERROR:    Patch installation: FAIL
30/03/2014 12:23:46          Stop update process
30/03/2014 12:23:46          User close the application
30/03/2014 12:23:46          Stop