I'm trying to use the "Extract Genomic DNA" feature from "Fetch Sequences" on Cufflinks-assembled transcripts, using a custom genome. However, when I specify "History" as the "Source for Genomic Data" and a fasta file as the reference file, I still get the "Unspecified genome build" error. I read somewhere that this bug has been solved, but this does not seem to be the case!?