This chapter has surveyed systemic problems with the description of ground-state CXs in conventional LR-TDDFT. Although the focus here has been on singlet photochemistry (S 0 /S 1 intersections), similar problems can be expected for any CX that involves the ground state of the molecule, when that state is used as the reference state for LR-TDDFT. Numerous (apparently successful) applications of conventional LR-TDDFT to nonadiabatic molecular dynamics can be found in the literature, yet there are reasons to worry about that method's ability to describe the final internal conversion step that returns the molecule to its ground state. Therefore we must conclude that, at present, the situation remains unclear as to how pervasive these problem are, and the extent to which they effect real observables, though there are undeniably cases where LR-TDDFT warps the topography around a S 0 /S 1 intersection seam to such an extent that it has a significant effect on the simulated S 1 lifetime and thus the internal conversion timescale. The unbalanced treatment of a quasi-degenerate ground and first excited state in LR-TDDFT can also lead to convergence problems that stymie attempts to use this method as a black-box engine for nonadiabatic molecular dynamics.