Thanks for the support. I’ve been asked for a donations page etc. I feel it wouldn’t be right for me to be asking for money for this plugin - voluntarily or otherwise.
If anything raise a glas to Antosha Marchenko, and if you wanna help me out maybe bookmark+share my new site (irisvfx.com) and visit its blog section every now and then where I will be posting more freebies, scripts, settings, presets etc. in the future. That'd be mighty appreciated. With that out if the way, I've taken a quick look at the new SDK and found the issue. From my github issues page:
Chamfer Maker uses SendModellingCommand internally which instruments the C4D internal bevel tool by setting its options and executing it. However, as stated previously, the bevel tool was replaced with a new version. Trouble is, the R15 SDK in its current form still includes the interface for the old incarnation of the bevel tool. So SendModellingCommand accepts the settings as if it were the old bevelling tool but then just fails as it tries to execute the new tool. The effect is that no modified geometry is returned effectively killing all edges.
I posted a topic in MAXON's dev forums asking for how to properly access the new bevel tool with SendModellingCommand. Btw, that's also why AMa_ParallelMode still works. This is only relevant if Chamfer Maker is put under a HyperNURBS though.