Sandboxie-Plus was running in portable mode?

I installed Sandboxie-Plus v.1.15.12 to D:\Program Files\Sandboxie-Plus.
I notice there is a file "Sandboxie.ini" created in C:\Windows. Since I don't like program configuration files to reside in Windows root folder, I moved this file from C:\Windows to D:\Program Files\Sandboxie-Plus.
After that, everything basically works. However, whenever I exit, a small dialog pops up saying:
"Sandboxie-Plus was running in portable mode, now it has to clean up the created services. ... Do you want to do the clean up?"
I do not expect Sandboxie-Plus to run in portable mode. Why does such a dialog pops up?
Now should I check "Don't show this message again" and click "No"?

 

The dialog you're seeing is triggered because Sandboxie-Plus determines it's in "portable mode" if it finds the Sandboxie.ini configuration file in the same folder as the program (in your case, D:\Program Files\Sandboxie-Plus).

If you want to keep everything self-contained in the program folder (portable-style), you can leave it as is, check "Don't show this message again," and click "No" to skip the cleanup each time.

Note: If you uninstall the app while using it this way, you may lose your configuration.