It's not CSDM issue. It's Your no-steam version CS issue. Bailopan clearly says about that
here. If You were using the previous version of CSDM and if it was working - it's because Your no-steam CS was compatible with that CSDM version (the binaries of no-steam are once a while updated, but they don't follow instantly all VALVE updates). The latest CSDM is compatible with the latest steam update (which no-steam isn't yet).