unresolved symbol __vtbl__9type_info

We got the captioned error message when we do ther following. Can somebody give us a hint onn what could be wrong. ------------------------------------- we used the db_access and execute the following sql execute function grt_debug_set(50); create table grt_bnd ( time GRT_TimeExtent_t, siaip integer ); create index grt_bndi on grt_bnd(time) using grtree_am (timeparameter='20000'); create index grt_bndi on grt_bnd(time) using grtree_am (timeparameter='20000') fragment by expression siaip < 50 IN sbspace1,remainder in sbspace2;