Hi Joseph,
something went wrong with loading the genome and/or loading of the GTF file.
In the successful case:
Apr 09 17:05:16 ..... inserting junctions into the genome indices
Apr 09 17:05:18 Finished SA search: number of new junctions=0, old junctions=348621
This is correct as you used the same gtf as you used at the genome generation.
Unsuccessful:
Apr 11 12:08:59 ..... inserting junctions into the genome indices
Apr 11 12:18:53 Finished SA search: number of new junctions=315255, old junctions=33405
Somehow the junctions from the GTF do not match the junctions from the genome.
First, please run the mapping again to see if the problem persists.
Then, check that your genome directory did not get corrupted somehow. I would recommend re-generating the genome in from scratch.
Actually, you do not need to specify GTF at the mapping stage if you already used it at genome generation step.
Cheers
Alex