The HLX:CE Development Team has pulled version 1.6.4 due to a couple of packaging issues. Rather than having confusion over what needs to be updated, modified, fixed, etc, we've elected to just cancel 1.6.4 and release 1.6.5. There will be little to no difference from 1.6.4 to 1.6.5. If you've already updated to 1.6.5 we will have an update package out here shortly that you can run. Again, nothing critical happened to 1.6.4, just minor things that we decided we were not pleased with.
We apologize for any inconveniences.
The HLX:CE Development Team