The $TOUCH variable should point to the path location where the tox or toe files are launched.
If “64 bits/bin” is added to the path of the expected $TOUCH, and a message box appears at launch of Touch Files warning about a “duplicated node in the file”, it is related to the installation path of Touch.
The default installer contains a space in the name of the folder which causes the bug:
...\Derivative\TouchDesigner088 64-BitReinstalling Touch while removing the space or replacing it by an underscore will solve the issue:
...\Derivative\TouchDesigner088_64-Bit