This the the driver files for the Acer MTP devices. You will find the driver listed below. Note that this is not an exe file. You will need to extract the 3 files to a directory where you will be able to locate them and then ‘right-click’ on the setup file and then click on ‘install’.
Note that this is listed as the “ACER USB Composite Device Installation Disk” in the installation disk. It is a small file and this is downloadable here.