Hi Subroto - there's a security measure in newer versions of Windows that prevents programs that are run at the regular privilege level from modifying the contents of the Program Files directory. That's what was preventing your object writing from working.

When you choose "Run as Administrator", that runs the program at a higher privilege level and then it's allowed to modify things in Program Files.

You can enable it permanently by right-clicking on that shortcut and choosing "Properties". Then on that properties dialog go to the Compatibility tab and near the bottom there's a "Privilege Level" section with a checkbox for "Run this program as an administrator". If you set that then it will run like that by default.

I think Max has an updated version of CustomUI for version 4 which moves these things over into the AppData folder which does not require elevated privileges.

- Michael