The new version of Secret Folder has several changes designed to increase the level of security, including the use of different support files located in special folders in the Finder. For this, to upgrade from the old version to the current one, you will need to recreate the list of files and folders in the main window of the app.
There are two ways to do it.
Method 1 (the easiest way)
- Launch new version of Secret Folder.
- In the main window of the app, click on the "+" button while pressing the Option-key.
- In the dialog that opens you will be able to see either a visible or an invisible items, locate and select the files or folders that you want to make visible (please note that items contained in a invisible folder are themselves invisible, so if a file is located in an invisible folder, to make the file visible you just need to make visible the folder that contains that file).
Method 2 (to use if you don't remember where are the hidden files)
Open the old version and make visible all the listed items (if you don't have the old version, you can download it from this page).
For each item in the list, click on the magnifying glass icon in the old Secret Folder to reveal it the Finder.
Drag and drop each item from the Finder to the main window of the new version of the app.
Now the old version does not help you any more, just move it to the trash.