browser

With Netscape:

rm $HOME/.netscape/lock or rm ~/.netscape/lock

For Mozilla:

rm $HOME/.mozilla/*/*/lock or rm ~/.mozilla/*/*/lock

For Firefox:

rm $HOME/.mozilla/firefox/*/lock rm $HOME/.mozilla/firefox/*/.parentlock or rm ~/.mozilla...

This error mean that the application does not know what your web browser is. This is preventing the application from opening up the html document.

To fix this error you can do either of the following:

1. When the question comes up, click on Yes.
   In...

First, quit Thunderbird (or else any changes you make to the file below will be overwritten)
Add the following line to your prefs.js file in your .thunderbird directory: user_pref(''network.protocol-handler.app.http'', ''/usr/bin/firefox''); Click...