The Doctor <doctor(at)doctor(dot)nl2k(dot)ab(dot)ca> writes:
> ns1# FATAL: database files are incompatible with server
> DETAIL: The database cluster was initialized with HAVE_INT64_TIMESTAMP but the server was compiled without HAVE_INT64_TIMESTAMP.
> HINT: It looks like you need to recompile or initdb.
> What do I need to get this running again?
You forgot --enable-integer-datetimes, which your previous installation
was evidently built with.
regards, tom lane