Yes, actually... using orange antifreeze with a brass-core radiator can and will cause failures along the seams of the tank.

If the car came with standard green antifreeze, it should be kept at that. The organic-acid (aka orange antifreeze) stuff can cause some serious troubles with systems not designed for it... I think it can even cause some damage to certain waterpumps...

Here's hoping the damage is limited to the radiator, and I'd switch back to the green stuff with your new radiator, and just change the fluid more often, if you're concerned with system contamination in your car.