I have been using SNAP for a few months to visualize and correct Landsat 8 and Sentinel 2 data. Recently, a few weeks after successfully installing the C2RCC plugin for atmospheric and radiometric correction, and using it once or twice, I now find that I can no longer open a Landsat 8 image in SNAP Using Open Product and selecting the MTL file. I have checked the MTL and the file names referenced within are fine. I can open any of the individual bands, and they are fine.
I uninstalled and reinstalled SNAP, and had the same issue.
Any ideas are much appreciated. I can add detail if anything might need clarification.