Error message trying to download libreElec to sd card

1st Official Post

    Hi, hope someone can advise. Trying to download to sd card but when pressing 'write' button the error message " error:couldn't open f:/libreelec-rpi2.arm-8.0.2.img.gz ". I've tried lots of times - checked its not- read only / formatted sd card and used another different brand new sd card , but still get same message. Would appreciate any guidance. Thanks