Was trying to remove some chests and it keeps crashing. I somehow managed to delete them but I wasn't able to reproduce it.
I can provide a savefile if needed.

The mod Orbital Transfer (0.2.1) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event orbital-transfer::on_object_destroyed (ID 169)
__orbital-transfer__/control.lua:123: attempt to index local 'platform_data' (a nil value)
stack traceback:
    __orbital-transfer__/control.lua:123: in function 'rescan_provider_chests'
    __orbital-transfer__/control.lua:465: in function 'deregister_transfer_chest'
    __orbital-transfer__/control.lua:473: in function <__orbital-transfer__/control.lua:469>

This looks related to the other error report, I think I know what's going on and will update soon.

Hopefully fixed in 0.2.2. You might need to destroy all chests on the platform but rebuilding them should hopefully get things back into a working state.