for some reason the NACL plugin/app is not working on my new 45x. It operates the camera, but I get one single shot and then it's frozen, controls still work but basically a screen shot. It works fine with my other cameras.
I've also have Smart PSS 2.00.2 and it works fine. Unfortunately it does not allow for all adjustments.
And, I have PSS v4.06 which came off the CD included with the camera. It looks nice but it will not accept the camera password. Looks like my password is longer than the software will accept.
You don't say what browser.
Try using Pale Moon browser, 32bit version.
Latest SmartPSS version is 2.02.00