RedRockRun

I had deleted it from Steam and am now trying to install it again; only now when I first try to install it, I'm told I don't have enough free disk space (99+GB are free). The second time I try to install, it allows me, but near the end of installation, I'm given the disk write error again. So far I haven't encountered this with any other games on my Steam library.

I'm trying to access the CE through Steam by choosing it in the Betas tab. When it tries to update, I get a "Disk write error" message. It's not something I've encountered before; has anyone else seen this?