http://pastebin.com/Biek1Pwf

Buildcraft 7.1.15
logisticspipes-0.9.3.99.jar
buildcraft-compat-7.1.3.jar

Full explanation here https://github.com/BevoTechPack/BevoTechPack/issues/930

the problem is that logistic pipes uses proxies to do it's integration and those test for specific BC versions and are not updated to BC 7.1.15 yet, update LP and it should work

We first need to update LP to work with BC 7.1.15.
The other question is, if there shouldn't be a null check there. In case something implements the IPipeTile but at that moment doesn't have a Pipe to return for example some sort of microblock.
https://github.com/BuildCraft/BuildCraft/blob/7.1.x/common/buildcraft/transport/BlockGenericPipe.java#L425

can't hurt to put a null check, i'm not sure if there is a case where it shouldn't have a pipe to return but during loading things in BC can sometimes return null cause they are not loaded/initialized yet

Can I ask please, the fix to BC will fix the pipe not connecting or will it just stop the crashing? Or does Davboecki need to update LP to get the pipe connecting?

The crash issue is related to breaking BC pipes near LP pipes. I'm not sure if I can fix the other one.

I need to update LP. The pipes don't connect because our proxy to BC get's disabled. There is an exception in the init phase that disables it. That's the reason for missing receipes and BC pipes not connecting to LP.
Look here for more updates and to find out when it was fixed: RS485/LogisticsPipes#938

Indeed.

@davboecki - don't bother yet, BuildCraft 7.1.16 is coming in a few hours

Good to know. Thanks for the heads up.