I can confirm that the current version of Logistics Pipes (LogisticsPipes-MC1.6.2-0.7.4.dev.64) has resolved the issue of a crash when breaking a Buildcraft pipe. Even though my base is heavily invested in AE now, I've always been a tremendous fan of Logistics Pipes. Some of my favorite personal creations have been my vast and complex Logistics Pipes networks. In fact, I am off to build a Logistics-Pipes-to-Tinkers-Smelteries system to process the ores coming from my quarries.