help with error needed

help with error needed

[Anand Dhanakshirur]

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When i run emacs with --debug-init option ,
I am getting this error,

Debugger entered--Lisp error: (error "Font 
`-sony-fixed-medium-r-normal--13-120-100-100-c-80-iso8859-1' is not 
defined")
modify-frame-parameters(#<frame emacs@surya.cdotb.ernet.in 0x8dc19d0> 
((font . "-sony-fixed-medium-r-normal--13-120-100-100-c-80-iso8859-1")))
set-default-font("-sony-fixed-medium-r-normal--13-120-100-100-c-80-iso8859-1")
byte-code("ÆÇ!ˆÈÉÊ\"ˆÈËÌ\"ˆÈÍÎ\"ˆÈÏÐ\"ˆÈÑÒ\"ˆÓÔ\b\"ˆÓÕ 
\"ˆÈÖ×\"ˆÈØÙ\"ˆÈÚÛ\"ˆÈÜÝ\"ˆÞß!ˆÈàá\"ˆâã!ˆâä!ˆå 
ˆæ\x12ç\x13èé!ˆêé!ˆëì!ˆëí!ˆëî!ˆï\x1cðñ\fBCòó#ˆôõó\"ˆ\fˆ)ö\x1dðñ 
BCò÷#ˆôø÷\"ˆ ˆ)ù\x1e=ðñ\x0e=BCòú#ˆôûú\"ˆ\x0e=ˆ)ëü!‡" [emacs-version 
emacs-major-version senator-minor-mode-name 
semantic-imenu-auto-rebuild-directory-indexes tmp0 tmp0 set-default-font 
"-sony-fixed-medium-r-normal--13-120-100-100-c-80-iso8859-1" 
global-set-key [f1] save-buffer [f2] set-mark-command [f3] 
kill-ring-save [f4] yank [f6] compile message "Hi! Greetings from GNU 
Emacs %s! This is before key binding action." "Hi again! Another 
greetings from %s! This is *after* key binding action." [f9] undo [f10] 
other-window [f11] delete-other-windows [f12] kill-buffer 
global-unset-key "\x18\x03" "\x18ã" save-buffers-kill-emacs load-file 
"~/tools/emacsAddOns/linum.el" "~/tools/cedet/common/cedet.el" 
semantic-load-enable-excessive-code-helpers "SN" nil 
global-srecode-minor-mode 1 global-semantic-mru-bookmark-mode require 
semantic-decorate-include semantic-gcc semantic-ia (project unloaded 
system recursive) mode-local-bind semanticdb-find-default-throttle ...] 4)
load("~/.emacs" t t)
#[nil "\b…¾

How to fix this error?
I have not set the default font in my .emacs

Because of this, i am not able to use my key bindings and use cedet and ecb.

Anand

[-- Attachment #2: asd.vcf --]
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begin:vcard
fn:Anand Dhanakshirur
n:Dhanakshirur;Anand
email;internet:asd@cdotb.ernet.in
tel;work:(080)-25119295
tel;cell:9886178750
x-mozilla-html:FALSE
version:2.1
end:vcard