Hi to all: great forum. I'm trying BI with 4 USB webcam. I have: 2 x HP HD-4110 1 x Logitech HD C910 1x Trust FullHD Generally they work well, but I found an incompatibility with one HP and the Logitech: if both enabled one of them gives me this error in BI window: Error: 8007001f() 1019 All the other combinations instead work well. What's this? How can I solve it? TIA