Could be the 64-bit build isn't compatible with your setup. Can you use the 32-bit build?

In the address bar, type about:crashes<enter>. Note: If any reports do not have BP in front of the numbers/letters, click it to Submit them.

The crash report is several pages of data. We need the report numbers to see the whole report.

Using your mouse, mark the most resent 7 - 10 crash reports, and copy them. Now go to the reply box below and paste them in.

If you can't get Firefox to open, you will have to do this the hard way. https://support.mozilla.org/en-US/kb/mozillacrashreporter Open the file browser / explorer on your computer. Note: You may have to enable Show Hidden Folders / Files. Enter this in the address bar;

Windows: %APPDATA%\Mozilla\Firefox\Crash Reports\submitted Win 7/Vista: C:\Users\<username>\AppData\Roaming\Mozilla\Firefox\Crash Reports\submitted Win XP/2000: C:\Documents and Settings\<username>\Application Data\Mozilla\Firefox\Crash Reports\submitted

Mac OS: /Users/<username>/Library/Application Support/Firefox/Crash Reports/submitted Linux: /home/<username>/.mozilla/firefox/Crash Reports/submitted

Copy the last 5-7 Recent File Names in the folder. Post the information in the reply box below.

bp-1a90de55-489f-44aa-ba9c-1432c2160614.txt bp-4d650a13-a2f1-445c-97aa-f31782160614.txt bp-9aed9684-e743-4997-ac59-7f2262160614.txt bp-adcf6ecf-2085-480c-8d39-d3ed52160614.txt bp-be186977-5f1d-4f26-bcd6-7583c2160614.txt bp-e7a854cb-8468-458f-b66e-c13472160614.txt bp-f0b28528-ade4-43dd-8231-b0b422160614.txt

I have installed 32 bit version, but unfortunately it doesn't work too :-(

Every one of those crashes is related to Websense Endpoint Client software. Check for an update for that application or disable that application.