Wireframe Ropes?

Sorry for asking two questions so fast… I just seem to be having a lot of problems with my map that I can’t figure out. So just like the title says, all of my ropes are either not even appearing or are wireframe. Some of them have no slack and just go straight from their starting point to the ground in a diagonal line. I have other entities colliding with the rope but I don’t think that’s the problem. Please help…

I deleted the folder /materials/cable and that worked for me.