Upon placing a laser, that has an energy source, small red square will appear near it for a split second and then dissapear.
http://puu.sh/8yQ2f.png (http://mod-buildcraft.com/forums/index.php?topic=542.0)

you already opened an issue on the forums, the github issue tracker is to track who is working on what. so unless you are working on a fix you shouldn't open an issue here

@AEnterprise I have fixed it, but apparently Github for Windows is now throwing me errors...