I would like to do an enrichment analysis/gene ontology analysis after an RNAseq differential expression analysis. For this, I would like to use a set of reference genes. I have already tried GO, but it's giving me some errors (it says that I have duplicate genes, while I've checked and I don't have them). Anyone could suggest a different tool?? Or, anyone that has an idea why I'm getting this error? Thanks a lot in advance!