"[ViewFolder(\"%l\", %I, %S)]" means? How to hide 2-pane folder view?

To Modify Folder Settings within Windows XP, please make the following changes within the Windows File Explorer or 'My Computer' by selecting 'Tools | Folder Options | File Types' and follow the appropriate step(s) outlined below:

- if ACDSee opens when you double-click on a Drive letter, please do the following:
- under the 'File Types' column click on 'Drive' then click on 'Advanced'
- the text in bold is the current default. Select 'Explore' or 'Open'. (if not available see ** NOTE below)
- then click 'Set Default' and click 'OK'
- click 'Close' to complete the changes

- if ACDSee opens when you double-click on a Folder, please do the following:
- under the 'File Types' column click on 'File Folder' then click on 'Advanced'
- the text in bold is the current default. Select 'Explore' or 'Open'. (if not available see ** NOTE below)
- then click 'Set Default' and click 'OK'
- next click on 'Folder' then click on 'Advanced'
- change the default selection to 'Open'
- then click 'Set Default' and click 'OK'
- click 'Close' to complete the changes

** NOTE: If the option to select 'Explore' or 'Open' is not available, you may create one as follows:
- within the 'Edit File Type' window select 'New...',
- for 'Action' enter: Explore
- click 'Browse...'
- browse to 'C:\Windows' and select 'explorer.exe'
- then click 'Set Default' and click 'OK'
- continue clicking 'OK' until the 'Modify Folder Settings' window is closed
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And finally, if the above steps do not resolve the problem:

In some cases it may be necessary to make these changes in the Windows Registry: