I installed the last update and got the following error on loading my save.

The mod Pipelayer caused a non-recoverable error.
Please report this error to the mod author.

Error while running event pipelayer::on_configuration_changed
LuaEntity API call when LuaEntity was invalid.
stack traceback:
pipelayer/configchange.lua:139: in function 'task'
pipelayer/configchange.lua:21: in function 'on_mod_version_changed'
pipelayer/control.lua:25: in function <pipelayer/control.lua:23>
stack traceback:
[C]: in function 'index'
__pipelayer/configchange.lua:139: in function 'task'
pipelayer/configchange.lua:21: in function 'on_mod_version_changed'
pipelayer/control.lua:25: in function <pipelayer/control.lua:23>