مشکل در نصب xulrunner-1.9.2

[hamidrezakp]

سلام
موقع نصب این اررور رو میده:

کد: [انتخاب]

Selecting previously unselected package xulrunner-1.9.2.
(Reading database ... 242584 files and directories currently installed.)
Preparing to unpack .../xulrunner-1.9.2_1.9.2.28+build1+nobinonly-0ubuntu0.10.04.1_amd64.deb ...
Unpacking xulrunner-1.9.2 (1.9.2.28+build1+nobinonly-0ubuntu0.10.04.1) ...
Setting up xulrunner-1.9.2 (1.9.2.28+build1+nobinonly-0ubuntu0.10.04.1) ...
/var/lib/dpkg/info/xulrunner-1.9.2.postinst: 8: /var/lib/dpkg/info/xulrunner-1.9.2.postinst: /usr/sbin/update-alternatives: not found
dpkg: error processing package xulrunner-1.9.2 (--install):
 subprocess installed post-installation script returned error exit status 127
Errors were encountered while processing:
 xulrunner-1.9.2