Problem
During the EDX installationBefore it starts copying over all the required files, it attempts to back up the customers existing edx.ini file. During this process an error can occur:
Solution
The key part to look for in this error message is the "Action SaveFiles" text. This is the process that's attempting to back up the edx.ini file. The problem is the permissions on the edx.ini file, and by definition the whole ProgramData\EDX folder aren't set correctly, and the current user doesn't have permission to access or modify these files. The easiest solution is to just rename the ProgramData\EDX folder to EDX_old, and re-run the installer. The installation should now finish correctly, and the permissions should now be correctly set for the {rgramData]EDX folder and all sub-folders and files. It may be at this point the user would need to manually copy the edx.ini file from it's location in the edx_old folder to the same location in the new folder to restore previous edx.ini file settings.