To be able to display headers information in the PageInfo tab of
Mozilla or Firebird the nsHeaderInfo component must be registered.
This component should be found in the file
Mozilla/Components/nsHeaderInfo.js
.
Registration should have been done by the LiveHTTPHeaders installation. However this sometimes does not work.
Follow these steps to enable Mozilla or Firebird to find and register the component:
Mozilla/Components/compreg.dat
Mozilla/Components/xpti.dat
These two files should be recreated automatically by Mozilla or Firebird when it is next started.
Note: if you installed LiveHTTPHeaders in your profile,
there is a copy of the nsHeadersInfo.js file in your
"profile/components
" directory. You need to
copy it in Mozilla/Components directory first and follow the directive
above after.