I'm looking at possibly getting a Specialized Allez Comp. Alluminum frame with Carbon fork and seat post. I have heard (not sure where I heard this) that it's not good to put an aluminum/carbon bike on a trainer as it may be too much stress on the joints? I really don't know what I'm talking about. Anyone able to help me out with this?

I was planning on selling my current bike to pay for the new one, but if I can't put the new bike on a trainer . . . well, I'd want to keep my current bike.