Hi Philipp, After install the tools versions with your document. I get the below error on each design. ERROR: /openLANE_flow/scripts/klayout/def2gds.py159 Stream has unknown format: /ECE/asic_tools/pdk/sky130A/libs.ref/sky130_fd_sc_hd/gds/sky130_fd_sc_hd.gds in Layout.read
/openLANE_flow/scripts/klayout/def2gds.py:159 (class exceptions.RuntimeError)