added error when try to use truncation but p/q not available;
added error when try to
use truncation but p/q not available;

nimble-dev/nimble,nxdao2000/nimble,NLMichaud/nimble,nimble-dev/nimble,nxdao2000/nimble,nimble-dev/nimble,NLMichaud/nimble,nxdao2000/nimble,nimble-dev/nimble,NLMichaud/nimble,NLMichaud/nimble,nxdao2000/nimble,nimble-dev/nimble