I do not have any problems with PLI, VTI, OBH etc with OMB (BH in flash) and VU + Ultimo 4K. I've seen a couple of times the kernel problem earlier. The problem has disappeared since I use another USB stick and the OMB image selection menu I previously selected the image through the plugin. Whatever the cause is difficult to say whether USB or something else. Basically I have never had a corrupt kernel after this kind of OMB use.