XML Parsing Error: undefined entity
Location: chrome://browser/content/devtools/scratchpad.xul
Line Number 193, Column 7:      <menuitem id="sp-menu-pprint"
------^
#here are the changes i made
#EDIT : 1
#location
/mozilla-central/browser/devtools/scratchpad/scratchpad.xul
#changes in line 193
<menuitem id="sp-menu-pprint"
          label="&pprint.label;"
          accesskey="&pprint.accesskey;"
          key="sp-key-pprint"
          command="sp-cmd-pprint"/>

#EDIT : 2
#location
mozilla-central/browser/devtools/scratchpad/test/browser_scratchpad_ui.js
#changes in line 35
"sp-menu-pprint": "prettyPrint",