[galaxy-user] Job En-queued, but not running

Hi, I created a workflow ( https://main.g2.bx.psu.edu/u/vijay-uky/w/rna-seq-analysis ) and uploaded the reference genome (30 MB FASTA file) and the reads (45B FASTQ file after running the FASTQ groomer). Once I ran the workflow on the public server, it will enqueue the needed output (steps) but the job just wouldn't run. I tried to run the same on a local instance at my lab, it works fine. Was curious to know if there is some issue with running tools such as TopHat, Cufflinks and Cuffcompare. If you could let me know, would greatly appreciate. Sincerely, Vijay