lldb-5.0 on linux not finding lldb-server-5.0.0

Somebody on stack overflow is reporting:

https://stackoverflow.com/questions/46164427/lldb-is-not-starting-an-application

that they got the 5.0 tools on an Ubuntu system, and lldb is saying:

error: process launch failed: unable to locate lldb-server-5.0.0

when he tries to run a process. The reporter says there's an lldb-server in the package he got, but not an lldb-server-5.0.0.

Did his install just go bad or is this something other folks are seeing? I don't have an Ubuntu system handy to check this out.

Jim