Flextight Raw files importing issues to Lightroom

Hi, I recently made some raw scans on Imacon 949 scanner and when I changed the file to tif the black and white imported to Lightroom CC fine but the color does not import and it says - an unknown error occurred.(3). So is it Lightroom CC 2015 that’s the issue? And if yes what version of Lightroom should work?

Thanks,
Kristine