Have been having a similar problem for some time: CM (and no-one else) loads, shows briefly, then disappears. This is on Mint Sarah XFCE running Firefox 47.0.(and not on Ubuntu on my networked box, which works fine) I seem to have cured it by resetting the NoScript whitelist to defaults: evidently an exemption I’d made for another site had been screwing up the system somehow. Allowing scripts globally didn’t work, and disabling NoScript didn’t either, but this did: it may still be a Cloudflare issue…dunno. Getting a NoScript notification for Cloudflare and statcounter, but I shall leave well alone.