First Layout: /home/bjmuld/work/mpw2/checks/user_analog_project_wrapper_empty_erased.gds
Second Layout: /home/bjmuld/work/mpw2/checks/user_analog_project_wrapper_erased.gds
Design Name: xor_target
Output GDS will be: /home/bjmuld/work/mpw2/checks/user_analog_project_wrapper.xor.gds
Reading /home/bjmuld/work/mpw2/checks/user_analog_project_wrapper_empty_erased.gds ..
ERROR: In /usr/local/bin/xor_checks/xor.drc: Stream has unknown format: /home/bjmuld/work/mpw2/checks/user_analog_project_wrapper_empty_erased.gds in Layout::read
ERROR: Stream has unknown format: /home/bjmuld/work/mpw2/checks/user_analog_project_wrapper_empty_erased.gds in Layout::read in MacroInterpreter::execute
  /usr/local/bin/xor_checks/xor.drc:15:in `execute_drc'
  :/built-in-macros/drc_interpreters.lym:18:in `instance_eval'
  :/built-in-macros/drc_interpreters.lym:18:in `execute_drc'
  :/built-in-macros/drc_interpreters.lym:92:in `execute'