At the start of the run, in the console I get this message: "MC_PRE_ENTITY_SPAWN" from "StageAPI" failed: ...i15_1348031964/scripts/stageapi/grid/altRockOverride.lua:43: attempt to index a nil value (field 'Room')
Stack Traceback:
...i15_1348031964/scripts/stageapi/grid/altRockOverride.lua:43: in function at line 42
I have Repentogon, NO Rep+, and several others mods installed (FiendFolio, Andromeda, Rep Plus, Glaze Ceremony), don't know if this is a relevant problem.

Yep, I also got these two errors at the start of the run (too annoying to copy, so I took a screen and it's on google).
Conflict with Community Remix and StageAPI

https://drive.google.com/file/d/10hZP3Dp8GNiJ4mnib2xrKba2WCE3P7CY/view?usp=sharing

Originally posted by sly91:

At the start of the run, in the console I get this message: "MC_PRE_ENTITY_SPAWN" from "StageAPI" failed: ...i15_1348031964/scripts/stageapi/grid/altRockOverride.lua:43: attempt to index a nil value (field 'Room')
Stack Traceback:
...i15_1348031964/scripts/stageapi/grid/altRockOverride.lua:43: in function at line 42
I have Repentogon, NO Rep+, and several others mods installed (FiendFolio, Andromeda, Rep Plus, Glaze Ceremony), don't know if this is a relevant problem.

I got the same error report at the start of a run:
"MC_PRE_ENTITY_SPAWN" from "StageAPI" failed: ...i15_1348031964/scripts/stageapi/grid/altRockOverride.lua:43: attempt to index a nil value (field 'Room')
Stack Traceback:
...i15_1348031964/scripts/stageapi/grid/altRockOverride.lua:43: in function at line 42

Will be looking into this soon. Thanks for the reports.

I'm not sure if this is a bug or just an unfortunate side effect of the modding api; when bombing into a dark vault via a secret room and then leaving through the normal door, the dark vault door stays locked (whereas stuff like shops or normal vaults or whatever will be unlocked)

BTW I'm also getting the previously mentioned error but you already know about that (and it doesn't seem to do anything?)

My Isaac suddently crashes on startup. I believe this is an Incompatibility with better coop item pedestals, not sure though.

[INFO] - Running Lua Script: C:\Program Files (x86)\Steam\steamapps\common\The Binding of Isaac Rebirth/mods/dark vaults_3420129062/main.lua
[INFO] - Lua Debug: Error in "MC_PRE_ENTITY_SPAWN" call from "StageAPI": ...geapi15-master/scripts/stageapi/grid/altRockOverride.lua:43: attempt to index a nil value (field 'Room')
Stack Traceback:
...geapi15-master/scripts/stageapi/grid/altRockOverride.lua:43: in function at line 42

[INFO] - Lua stack trace:
[INFO] - [C](-1): GetRoomShape
[INFO] - ...irth/mods/better coop item pedestals_2491785532/main.lua(8222): getTopLeftWallGridIndex
[INFO] - ...irth/mods/better coop item pedestals_2491785532/main.lua(20378): checkRoomChanged
[INFO] - ...irth/mods/better coop item pedestals_2491785532/main.lua(20374): ?
[INFO] - [C](-1): xpcall
[INFO] - resources/scripts/main_ex.lua(1226): RunCallbackInternal
[INFO] - resources/scripts/main_ex.lua(1247): ?
[INFO] - [C](-1): CreateTimer
[INFO] - ...aults_3420129062/scripts/modcompatibility/minimapapi.lua(11): ?
[INFO] - [C](-1): include
[INFO] - Caught exception, writing minidump...

Now it works flawlessly. I am so confused. Although I am still getting this...

Originally posted by rainy:

Originally posted by sly91:

At the start of the run, in the console I get this message: "MC_PRE_ENTITY_SPAWN" from "StageAPI" failed: ...i15_1348031964/scripts/stageapi/grid/altRockOverride.lua:43: attempt to index a nil value (field 'Room')
Stack Traceback:
...i15_1348031964/scripts/stageapi/grid/altRockOverride.lua:43: in function at line 42
I have Repentogon, NO Rep+, and several others mods installed (FiendFolio, Andromeda, Rep Plus, Glaze Ceremony), don't know if this is a relevant problem.

I got the same error report at the start of a run:
"MC_PRE_ENTITY_SPAWN" from "StageAPI" failed: ...i15_1348031964/scripts/stageapi/grid/altRockOverride.lua:43: attempt to index a nil value (field 'Room')
Stack Traceback:
...i15_1348031964/scripts/stageapi/grid/altRockOverride.lua:43: in function at line 42

With the Blue Key trinket, entering a dark vault in a Custom Stage API level can allow clearing and farming for room clear rewards from the same blue room endlessly

The purple chests inside the vaults count as enemy damage and take away ur deal chance/perfection stage