[EMBOSS] Question regarding Reference Sequence Database

[Jean Mao]

Hi,

Does any program in EMBOSS package can make use of the Reference Sequence
Databases? I indexed refseq databases with dbxflat and run showfeat against
them but receive error about has zero length sequence :

Warning: Sequence 'refseqnt-id:NG_002612' has zero length, ignored Error:
Unable to read sequence 'refseqnt:NG_002612' 

Thanks!

Jean