Still happening to me...I just ran through the menu of 40 fares AA.com offered me. Only 15 are actually valid and bookable, according to the website.
I was able to select a V fare in economy for 2 weeks from now from SBA to DCA for the bargain price of $2424 r/t. Taxes are not included, however.
Someone needs to buy these cracker-jacks a TRS-80 so they can modernize their systems.