It looks like GL4ES attempts to interpret a commented-out code.
That error line:
ERROR: 0:10065: '<' : Wrong operand types. No operation '<' exists that takes a left-hand operand of type 'in const float' and a right operand of type 'const int' (and there is no acceptable conversion)
looks to be talking about that shader source line, which is inside a comment:
10065: /* colorMod uint format:
10066:
10067: colorMod << 0: color * 1