It stops at 300/500. There's no hint what to do or what's supposed to happen.

control_levels.lua

table.insert (storage.monitored_entity, {entity=extractor, event="core-extractor", tab_event={last_craft=0, increase_amount=400, max_radius=10,amount_limit=10000, halt_on_craft=300} })

Anyone playing on difficulty levels 2-5 won't be able to finish level 4 because the miner is capped at 300 mining cycles.

Also, trying to summon the boss after done minging, sometimes gives this error message.

The mod Planet Erimos Prime (0.1.5) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event planet_erimos_prime::on_gui_opened (ID 100)
__planet_erimos_prime__/control_enemy.lua:114: bad argument #1 of 1 to 'random' (interval is empty)
stack traceback:
    [C]: in function 'random'
    __planet_erimos_prime__/control_enemy.lua:114: in function 'PEP_SpawnBoss'
    __planet_erimos_prime__/control_missions.lua:320: in function 'create_hidden_mission'
    __planet_erimos_prime__/control_gui.lua:224: in function 'update_terminal_gui'
    __planet_erimos_prime__/control_gui.lua:90: in function 'player_opened_terminal'
    __planet_erimos_prime__/control_gui.lua:31: in function <__planet_erimos_prime__/control_gui.lua:24>

can I have your saved game ? i could not figure out how there are no bug holes on that level at that point

Also, trying to summon the boss after done minging, sometimes gives this error message.

```
The mod Planet Erimos Prime (0.1.5) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event planet_erimos_prime::on_gui_opened (ID 100)
planet_erimos_prime/control_enemy.lua:114: bad argument #1 of 1 to 'random' (interval is empty)
stack traceback:
[C]: in function 'random'
planet_erimos_prime/control_enemy.lua:114: in function 'PEP_SpawnBoss'
planet_erimos_prime/control_missions.lua:320: in function 'create_hidden_mission'
planet_erimos_prime/control_gui.lua:224: in function 'update_terminal_gui'
planet_erimos_prime/control_gui.lua:90: in function 'player_opened_terminal'
planet_erimos_prime/control_gui.lua:31: in function <planet_erimos_prime/control_gui.lua:24>
```