The mod Loader Utilities (1.1.0) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event loader-utils::on_built_entity (ID 6)
The mod Powered Belts Extended (1.3.0) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event PoweredBeltsExtended::script_raised_built (ID 92)
Unknown entity name: fs-transport-belt-loader-0_2-0_2-1-power
stack traceback:
[C]: in function 'create_entity'
PoweredBeltsExtended/modules/entities.lua:94: in function 'init_entity'
PoweredBeltsExtended/modules/event_handlers.lua:9: in function <PoweredBeltsExtended/modules/event_handlers.lua:6>
stack traceback:
[C]: in function 'create_entity'
loader-utils/control.lua:107: in function 'replace'
loader-utils/control.lua:239: in function <loader-utils/control.lua:228>

also loaders flip backwards when power providers are changed

Hi! Thanks for the report! Could you help me identify the issue:

1. provide more context on conditions under which the error occured? does it happen regularly or rarely? did you just install one of the mods and it happened almost instantly when loading save or starting new game with both mods and placing a loader?
2. do you use more mods that modify/add loaders?

1.every time i place a loader, just place one. happens only when placing a loader, loading an old save with them already placed and it works fine
2.loader utils, deadlocks beltboxes n loaders, and this mod

Thank you for the additional information. I've managed to reproduce this bug and figured that it was an issue of mod loading order. Staged fix for the next release (> 1.3.0 - not live yet - probably today/tomorrow).