Best I could do:
My music player uses foobar2000, not English the official version, but the foobar2000 Chinese Forum ashin the finished version.
Since a rise to 7, I opened up I never checked automatically sandbox feature, open foobar2000 when a sandbox module starts, choose ten seconds after the next normal start foobar2000 installation path so to exclusion of the sandbox module path.
Small a the upper right corner of the main interface set the bottom of the "Troubleshooting" point, the settings revert to default settings reboot, open foobar2000 no longer pop-up sandbox prompt box, I was puzzled to open the sandbox settings interface, found to exclude The path was empty.
I hold psychological try the uninstaller control panel, select repair, repair interface probably read all settings revert to default "such a meaning, the repair is completed manually restart and then open foobar2000 pop-up sandbox tips box.
Said so much about the meaning that if there is a program to run a pop-up prompt box sandbox select the next normal start, but with the main interface settings "Troubleshooting" restore default settings, the next run the program would not be small a pop-up sandbox prompt, although the sandbox set up inside the exclusion path has not. If you want to make it pop-up will have to repair the small a in the uninstall program.
A precaution, before posting I successfully reproduce this phenomenon, but no screenshots.