Hurray!
Unfortunately, SourceForge is still belly up:
[20150719/1233] DHT bootstrap error: HTTP/1.0 503 Service Unavailable (http://update.apexdc.net/version.xml.sign)
[20150719/1233] Update Check: could not download digital signature (HTTP/1.0 503 Service Unavailable)
[20150719/1233] DHT bootstrap error: HTTP/1.0 503 Service Unavailable (http://update.apexdc.net/version.xml)
[20150719/1233] Update Check: could not connect to the update server (HTTP/1.0 503 Service Unavailable)
This does not bode well for their already quite tarnished reputation.
I noticed there's a https://www.apexdc.net/version.xml that could be used as a replacement for http://update.apexdc.net/version.xml, but it's missing the version.xml.sign and a tad outdated.