the power transport lasers dont seem to want to work until i cause a block update on the pipes near the provider.
this only happens every time the chunk reloads

lp build 65
minecraft 1.7.10

srry i didnt check the notification but ya that was the problem

So it is only a visual bug?
Because the lasers do also bug, when you are far away, your client does not see the chunk and they power on.