Hey everybody, SolidWorks dummy strikes again. A little bit of background...started at a new company about a month ago, with very limited solidworks background, am in the position of leading piping design for a small project. My predecessor left behind an unorganized custom routing components library, with some components built correctly, and some not. In frustration, I have resorted to ignoring the routing add on and am instead just using mates, and extrudes to create my routing assemblies, luckily it is a small project so this is not a huge detriment at the moment. However, sometimes I am forced to edit routes created by my predecessor using the add on. I have just spent at least an hour trying to add an elbow to the route pictured below, however when i add a perpendicular line to the 3d sketch defining the route it results in a rebuild error and the elbow is not built. Also, within the sketch I see the fillet appears as bright read, while the other elbows appear as grey, could somebody give me some possible ideas as to what is going on? i blieve my library is routed to the right parts, not sure what is happening.