I got the following error with Editor Extensions 1.4.1:

The mod Edit-Blueprints (0.1.6) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event Edit-Blueprints::on_gui_click (ID 1)
The mod Editor Extensions (1.4.1) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event EditorExtensions::on_player_toggled_map_editor (ID 116)
EditorExtensions/scripts/inventory.lua:82: attempt to get length of local 'sync_inventory' (a nil value)
stack traceback:
EditorExtensions/scripts/inventory.lua:82: in function 'handler'
RaiLuaLib/lualib/event.lua:127: in function <RaiLuaLib/lualib/event.lua:28>
stack traceback:
Edit-Blueprints/control.lua:159: in function 'toggle_editor_and_teleport'
Edit-Blueprints/control.lua:559: in function 'enter_blueprint_editing'
Edit-Blueprints/control.lua:756: in function <Edit-Blueprints/control.lua:752>
stack traceback:
[C]: in function 'toggle_map_editor'
Edit-Blueprints/control.lua:159: in function 'toggle_editor_and_teleport'
Edit-Blueprints/control.lua:559: in function 'enter_blueprint_editing'
Edit-Blueprints/control.lua:756: in function <Edit-Blueprints/control.lua:752>

Raiguard told me he already fixed it for next version of Editor Extensions. :) Thank you for the report!

Thank you!