Got my Apple Macbook Multitouch Trackpad drivers to install on 64 bit Windows 8 RTM.
Upgraded Windows 7 to Windows 8, keeping applications and files. As as result, Boot Camp 3.2 was already installed, but trackpad was not working.
Installing drivers manually using device manager from the Boot Camp 4 installation files failed. Windows compatibility mode failed. Hacking the BootCamp64.msi file using Orca to detect a different Windows version also failed.
So I went back to device manager which did not have any devices with problems, and I couldn't find the devices Apple Trackpad or Multitouch Trackpad. I tracked down two generic device entries called usb input device and figured out they were the trackpad installed with generic Microsoft drivers. When I tried to update these generic device drivers to the apple drivers, I got the error "system cannot find the path specified". Open up the system's SetupAPI log file and discovered the file not found error was caused by attempting to find driver files in DriverStore which did not exist:
So I created those two folders and copied all of the
*mtm64 files from boot camp 4 installation files to these respective folders, and also copy the
WdfCoInstaller01005.dll file into both folders.
After doing that I was able to use the device manager and install the apple trackpad drivers without any problems just by searching for the driver normally, and now my right click and two finger scrolling work great!