I get the following error on startup:

Failed to load mods: core/lualib/resource-autoplace.lua:7: attempt to index field '?' (a nil value)
stack traceback:
core/lualib/resource-autoplace.lua:7: in function 'get_patch_set_index'
core/lualib/resource-autoplace.lua:36: in function 'initialize_patch_set'
cargo-ships/prototypes/resources-new.lua:126: in main chunk
[C]: in function 'require'
cargo-ships/data-updates.lua:2: in main chunk

Thanks for the report. I can't reproduce it on a clean install. Can you please share a log file, mod list, and/or mod setting state that causes this error.