unity-webapps-context-daemon crashed with SIGSEGV in g_utf8_validate()

[Vishnu V]

When i closed a webapp (Youtube) System says me there is an internal erroor

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: unity-webapps-service 1.8.0-0precise2 [origin: LP-PPA-webapps-preview]
ProcVersionSignature: Ubuntu 3.2.0-26.41-generic 3.2.19
Uname: Linux 3.2.0-26-generic x86_64
ApportVersion: 2.0.1-0ubuntu11
Architecture: amd64
CrashDB: libunity_webapps
Date: Tue Jul 24 07:24:53 2012
ExecutablePath: /usr/lib/libunity-webapps/unity-webapps-context-daemon
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
ProcCmdline: /usr/lib/libunity-webapps/unity-webapps-context-daemon YouTube www.youtube.com icon://youtube [Invalid\ UTF-8]
SegvAnalysis:
 Segfault happened at: 0x7f2aab762208 <g_utf8_validate+488>: movzbl (%rdi),%r8d
 PC (0x7f2aab762208) ok
 source "(%rdi)" (0x00000051) not located in a known VMA region (needed readable region)!
 destination "%r8d" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: libunity-webapps
StacktraceTop:
 g_utf8_validate () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_variant_new_string () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_variant_new_strv () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_settings_set_strv () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
 ?? () from /usr/lib/libunity.so.9
ThirdParty: True
Title: unity-webapps-context-daemon crashed with SIGSEGV in g_utf8_validate()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dialout dip lpadmin plugdev sambashare sudo