[Plugin: WP Super Cache] Cache Test: couldn't connect to host?

Does anyone know why I am getting this error?

Cache Tester

Test your cached website by clicking the test button below.

Fetching http://www.loansafe.org/ to prime cache: OK

Fetching first copy of http://www.loansafe.org/: OK

Fetching second copy of http://www.loansafe.org/: OK

One or more page requests failed:
couldn’t connect to host