I assume that these were scans of the negative, right?
If so, then the negatives are overly blue in color to give a yellow cast to the scan. This is quite unusual in my experience, as it indicates overdevelopment of the cyan and magenta layers, or underdevelopment of the yellow layer. This is a bit hard to do. Usually things go the other way.
In any event, it could also be a bleach problem or a fix problem, but that is very unlikely.
Sorry I don't have a better guess. You sure you didn't leave a filter on the lens?