fix courtesy of lastpass fourm user: wnfaulkner

Installation of the binary component is required for the copy username/password features.

Kindly try if the following helps:
1. Uninstall LP on Firefox https://lastpass.com/support.php?cmd=showfaq&id=185
2. Clear Firefox's cache and cookies https://support.mozilla.org/en-US/kb/ho ... efox-cache
3. Download the universal installer https://lastpass.com/download/cdn/lastpass_x64.exe
4. Restart your device > run the universal installer normally
5. Enable cookies https://lastpass.com/support.php?cmd=showfaq&id=11472
6. Install the binary component https://lastpass.com/support.php?cmd=showfaq&id=5576