I'm having issues as well and JavaforOS2013-004.dmg is no longer up. Since updating the Download manager yesterday, I am unable to find my wireless Radion. I can only access it via USB. And I get this error while installing the Ecotech Download Manager software on my Macbook Air:
The installation of EcoSmart Live Connection Manager is finished, but some errors occurred during the install. Please see the installation log for details.