Sometimes the small loads or loads with a single large item are difficult for the washer to balance. If the washer cannot balance the load after several tries, it will end the cycle without spinning. Check to see if the washer will spin without any clothes at all in the basket. If the washer shakes or vibrates excessively with no clothes added, then you could have a problem with the spin basket or the rear tub bearing. In some HE2+ washers (and HE3 washers) these parts are covered for longer than one year. You would have to pay for the labor to have a Sears Technician diagnose and repair the problem. Check your owner's manual for the warranty information if you suspect that you have this type of component problem.
If the washer spins properly with no clothes added, then you may not have a component failure in the washer. Check for excessive suds or foam when the washer will not spin properly. This could be causing your problem. If you find excessive suds in the washer, I recommend that you cut back drastically on the amount of HE (High Efficiency) detergent that you are using. (Make sure that you are using HE detergent.) You will normally only need about 1 tablespoon on HE detergent per wash cycle.
If excessive suds are not causing your problem, you could just be experiencing unbalanced loads if the washer will spin some loads properly. With smaller loads or large single items, you may need to add several towels or other items so that the washer can balance the load properly.
These general tips may help. If you need more assistance, reply with the full model number of your HE2+ (or HE3) washer and we will try to assist you further.