See To continue files downlding (click on link) Try searching for other sources. Generally you should choose those with 3 or 4 stars & lots of sources under the # column from the search results.

Do this test: Bug Report instructions & sample image Is the result True/False? If false then something like a firewall is partially blocking LW.

Did you configure your firewall so it allows LW full access (advisable not to have 2 active firewalls b/c they can interfere with each other); Firewall configuration instructions (click on link)