BleepingComputer.com: Why won't Windows Installer 4.5 work?

My cursor (Logitech cordless optical trackman, setpoint 4.8, Vista 64-bit, Maxthon 2) has been acting quite crazy on occasion (not always). It will jump from an intended target to another target that is to its left. Also, when brought to a yes/no button and left clicked, nothing happens. Moving the cursor ever so slightly causes it to jump left at a 45 degree angle. Bringing cursor back to target and left clicking, now works. Ans, sometimes icons in my tackbar don't open on the first click, they need a second click. Happens mostly in my browser, but also happens elsewhere. This odd behavior may have started when I updated my Nvidia card. Thinking here is that Setpoint 4.8 did quite connect with the updated Nvidia. So, I tried to download and install the newest setpoint, 6.0.

During instillation got the alert that "You are running a 32-bit installer in a 64-bit OS, please run correct installer." Well, my Windows Installer is 4.5, but I can't tell if it is or isn't for 64 bit. And to add fuel tot he fire, Logitech tells me that the instillation of the Setpoint application should be done by the logitech installer.

Any and all help gladly accepted.

Not sure waht your gettin at here but it sounds like you are running a 64 bit version of Windows. In that case all of the drivers and software affecting those devices should be designed for the 64 bit system. Go to Logitech and download the 64 bit drivers and software for your trackman, uninstall the stuff that is in now and install the newly downloaded drivers.