BP Construction Script Stops PCG from building when level loads in editor

Hi,

I’m using a BP to have generate a fence using PCG. Its pretty simple, drag out a spline and a wall appears along it. I’m having an issue with the construction script in the BP. In the construction script I’m defining the static mesh the PCG should use to make the fence (so I can choose for it to be waist high, full height, chainlink ect) which works except for when I close and relaunch the editor. When I reopen the level the spline is empty until I make an adjustment to the BP or PCG. Just wondering if anyone else has encountered this.