Dear sir or madam, I am using galaxy public server and I am trying to build a custom genome using the function "custom Builds" in "user" section. I specified the Name, Key and uploaded the genome fasta file also the chromosome length file. But when I click "submit", galaxy gave an error information like that: "" *Server Error:* An error occurred. See the error logs for more information. (Turn debug on to display exception reports here) "" I don't know where to find the error logs and how to turn debug on. Could you tell me how to fix the problem and upload the custom builds? Thanks a lot! Pengfei -- Pengfei Yu Center of Biophysics and Computational Biology University of Illinois Urbana-Champaign Illinois, 61820, US Cell phone: 217-898-6301