I've been trying to open Cortex Command at least 4 times. There is an error message saying something about "base.rte/devices/null" I just downloaded a bunch of mods, if that might relate to the problem, but last time I downloaded a mod it worked fine. Could someone tell me why it's failing?

yeah that's a mod's problem. copy the error message and we'll tell you which one to delete, or just copy null.bmp from base.rte to base.rte/devices. make sure you keep the original where it is though, so newer mods work.

Alright, here it is.

Abortion in file .\System\ContentFile.cpp, like 549, because:

Failed to load datafile object with the following path and name:

Base.rte/Devices/Null

The last frame has been dumped o 'abortscreen.bmp'

Pre Build 22 mod.
Repeating Geti:
Remove old mods or, copy paste null.bmp in base.rte into the devices folder.

I did the latter and now I'm getting a different error message:

Abortion in file .\Managers\PresetMan.cpp, like 162, because:

Failed to find the Infinite Bombs.rte Data Module!

the last frame has been dumped to 'abortscreen.bmp'

Check inside infinite Bombs.rte, see if there is an Index.ini.
If there is, post the index.
I'm guessing that it's because the index.ini is missing 'DataModule' on the top.

Alternatively, you could delete infinitybombs.rte

I wasn't sure If I should have made a new thread or not, but I'm getting another error on mine.
I just downloaded a bunch of mods today and I know they're responsible for it not starting again. This time the error message is:

Abortion in file .\Managers\PresetMan.cpp, line 162, because:

Failed to find the OAU.rte Data Module!

The last frame has been dumped to 'abortscreen.bmp

I also can't find the .\Managers\PresetMan.cpp to delete it. So how do I fix this?

Same as my post before, check if there is an Index.ini, if there is, make sure there is 'DataModule' on the top. (minus Quotations)