Hi Phakodoc,
The error that you are experiencing could be caused if the download was corrupted and stopped. When you attempt to download again, the file has been detected as already downloaded, so you end up executing the same corrupted file. Also, this error can occur if the security software installed on your computer is blocking the execution of the unzipping process, unzipping some, but not all of the zipped files.
Please go to a different computer and download "TR8500 series MP Drivers Ver.1.02 (Windows)". Once saved, move that file to a USB drive and then connect that drive to the other computer and move the installation to that computer. Once moved, please attempt to install.
Another way to do this would be to save the "TR8500 series MP Drivers Ver.1.02 (Windows)" file to your desktop. Once saved, please hold down the Windows key on your keyboard, press the letter E and let both go.
In Windows Explorer, at the top, click on View. Place a checkmark next to "File name extensions".
Once set, please go to your desktop, where "mpnp-win-tr8500-1_02-ea34_2.exe" has been saved.
Right click "mpnp-win-tr8500-1_02-ea34_2.exe" and left click on "Rename".
Change the exe to zip, so the file name now reads "mpnp-win-tr8500-1_02-ea34_2.zip". A message will appear, "Are you sure you want to change it?", click Yes.
Once changed, please double click "mpnp-win-tr8500-1_02-ea34_2.zip". Windows Explorer will open.
Drag the folder that appears to your desktop. Files will copy.
Once the file copy is complete, please double click the new folder "mpnp-win-tr8500-1_02-ea34_2" on your desktop.
Double click the DrvSetup folder.
In the DrvSetup folder, double click "Setup" to begin installation.
