can you test this:
edit yourjoomlainstall/plugins/system/jfgoogletranslator.php
in line 550 you should see something like this:
$db->getEscaped(utf8_encode(($narticle->$field)), true),
replace with:
$db->quote(utf8_encode(($narticle->$field))),
and in line 552
$db->getEscaped($jftarticle->$field, true),
replace with:
$db->quote($jftarticle->$field),
and on line 549
VALUES($dstlangid, $jftarticle->id, 'content', '{$field}', '%s', '%s', '%s', NOW(), 63, %d)",
replace with:
VALUES($dstlangid, $jftarticle->id, 'content', '{$field}', %s, '%s', %s, NOW(), 63, %d)",
and tell me if that works
