The effect of projection on computed spin crossover gaps was determined using a test set previously used by Hughes and Friesner. Calculations on this test set employed the B3LYP/6-311G* model chemistry. The PCM solvent model was used with the solvents that were used in the experimental references. This model chemistry is similar to the DBLOC tests by Hughes and Friesner except that the basis set used here is 6-311G*, which yields somewhat better results than the smaller LACVP basis set (see Table for preliminary data). Calculations of spin crossover gaps involved HS energy calculations with UDFT and LS energy calculations with both UDFT and AP. In all cases, the lowest energy solution found for each spin state/multiplicity was used in evaluating gaps. Again, the stability of all KS determinants was verified. 3