I installed RawTherapee 5.8. When open RAW files a black and green coloured high contrast display coming. I tried removing RawTherapee folder from .config files also deleted all the sidecar files.
Please provide all details about your installation such as developpers can answer (see [How_to_write_useful_bug_reports])(How to write useful bug reports - RawPedia), at least:
I am attaching the raw file here. This is taken using Canon EOS 60 D, and medium raw size option.
Please let me know whether any other details required.