Tony,
Invalid typically refers to a license issue. On the Kollector, what does it show up on the top bar (should say Kollector) and what is shown in the license registration page?
Also, make sure your power to the back panel where the BNCs are on is connected (maybe disconnected when you replaced the PS). If the hardware isn't found by the software, it will not be recognized as a Kollector, hopefully it didn't fry with that PS issue...