[galaxy-user] cuffdiff results missing

Hi, I ran cuffdiff using Refseq genes as GTF and two groups of BAM. Group one has two replicates (treated) and group two only one replicate (untreated). When looking at the outputs the following are empty (1 line): TSS group FPKM tracking TSS groups differential expression testing CDS FPKM tracking CDS FPKM differential expression testing CDS overloading diffential expression testing promoters differential expression testing splicing differential expression testing the other four outputs have data downloadable as excel. Is this normal? thanks, ib