Hi Mick,
This is a folder permissions issue on Windows. Try the following:
- With Windows Explorer, right-click the directory and select Properties.
- Go to the Security tab and click Edit.
- In the Group or user names section select SYSTEM or Everyone, then click Full control in the Allow column. If you don’t have SYSTEM or Everyone available, you’ll need to add it. To do that, click the Add button.
- The Select Users or Groups window will now appear. In the Enter the object names to select field enter Everyone or SYSTEM and click the Check Names button. Click the OK button.
- The SYSTEM or Everyone group will now be added. Select it and check Full control in the Allow column.
- Click Apply and OK to save changes.
Try to install the application after making these changes. Maybe changing permissions for the bin folder is not sufficient. In such case you'll have to repeat the same procedure for its parent PixInsight folder.
Let me know if this helps.
