The following Canon PowerShot cameras do not support remote capture operation and therefore will not work with PSRemote:
A series:
A410, A420, A430, A450, A460, A470, A480, A490, A495, A530, A540, A550, A560, A570 IS, A580, A590 IS, A610, A630, A650 IS, A700, A710 IS, A720 IS, A1000 IS, A1100 IS, A2000 IS, A2100 IS, A3000 IS, A3100 IS
Digital ELPH/IXUS: SD30, SD40, SD400 (Digital IXUS 50), SD430, SD450 (Digital IXUS 55), SD500 (Digital IXUS 700), SD550 (Digital IXUS 750), SD600, SD630, SD700 IS, SD750, SD770 IS, SD780 IS, SD790 IS, SD800 IS, SD850 IS, SD870 IS, SD880 IS, SD890 IS, SD900, SD940 IS, SD950 IS, SD960 IS, SD970 IS, SD980 IS, SD990 IS, SD1000, SD1100 IS, SD1200 IS, SD1300 IS, SD1400 IS, SD3500 IS, SD4000 IS, SD4500 IS
SX series: SX210 IS, SX200 IS, SX130 IS, SX120 IS, SX30 IS, SX20 IS, SX10 IS, SX1 IS,
G Series: G11, G12
S Series: S90, S95
Other: TX1, E1, D10