Find the log in the core folder starsector.log
Open it
Scroll to the very bottom
Then copy and paste the section that contains the error (it's at the very bottom)
This will help the creator of the mod fix your issue
sorry but umm, I don't know which last lines i am supposed to copy and paste
because the last lines all don't seem to have the word error or HMI in them
well, I did find this searching for error from the bottom up:
911264 [Thread-3] ERROR com.fs.starfarer.loading.ShipHullSpreadsheetLoader - Ship hull spec [tempest_s] not found in ship_data.csv
911264 [Thread-3] ERROR com.fs.starfarer.loading.ShipHullSpreadsheetLoader - Ship hull spec [junker] not found in ship_data.csv
911264 [Thread-3] ERROR com.fs.starfarer.loading.ShipHullSpreadsheetLoader - Ship hull spec [module_hightech_decor] not found in ship_data.csv
911264 [Thread-3] ERROR com.fs.starfarer.loading.ShipHullSpreadsheetLoader - Ship hull spec [flare] not found in ship_data.csv
but else that is kind of it