Thank you for the response.

The installer works fine... its the creation by the game of the game files in "temp\currently-playing" folder that fails both when loading the .zip save game file or a new game population.

Program loads fine until it trys to unZip the savegame to the "currently-playing" folder or newgame trys to create the "currently-playing" folder in the "temp" folder under Factorio AppData.

The "temp\currently-playing" read only folder appears after the creation attempt and the program closed ...