The D string will never tune up to D, only to B, before it pops back down to A (and I don't really want it tuned to EAAG, that's probably pointless). I am sure I am tuning it in the correct octave, and it had this exact problem once before (about seven years ago). It is a Yamaha RBX170.
I would rather see what I can do to fix it, if it is something within my ability at least, before taking it to a store to get it fixed. Money is, of course, short, so if anybody knows what I can do to fix it (buy new strings, though that was not the problem last time), or has questions so I can clarify the problem, please help. I've been offered a chance to work my way into a band, and I just want being a little rusty (which they can accept as long as it comes back to me--it has been) to be my only obstacle in achieving this.