Hello :)
I Found some issues with the latest public build , Maybe here its not the place to submit them , but its the only place i can do it in (your forum do not allow me to register there).

-You cannot right click tanks with any fluids to fill it (maybe its a feature , donno)
-Combustion engine dont accept any liqued but water (I mean lava or fuel)
-Right clicking on any pipe in creative mode will give you an item called " title.PipeBlock.name"

thats it :)

Hi @Yazidc. Thanks for your report. The actual place for these is report http://mod-buildcraft.com/forums/index.php?board=2.0, as long as they don't have somebody that is confirming and planning to fix. The two first issues are actually already known, due to Forge problem as far as we know. It would be useful if you could give more details on the third one :-)