instancepool example does not run

Inf function pool_create in pool.c following should have a case 2

switch(options->version)

{ case 0: io = options->v.v0.io; break; case 1: io = options->v.v1.io; break; default: /* * I don't know the layout of the option structure (its created * after I wrote the example) so I don't now if an io ops structure * is provided or not. */ return LCB_EINTERNAL; }

like case 2:
io = options->v.v2.io;

otherwise it says cannot create pool: internal libcouchbase error because it throws error.