SNLU224D September 2017 – February 2023 DS90UB953-Q1 , DS90UB953A-Q1
#X7861 shows the error message that states only one instance of this application can be active. This occurs when ALP fails to shutdown correctly.
Figure 3-24 Error
that States One Instance of This Application Can Be Active in ALPTo fix the error, click OK to continue. Access your task manager by pressing CTRL + Shift + ESC or CTRL + ALT + DELETE and selecting task manager. Then, go to the processes tab, select the MainGUI.exe *32 process, click end process shown in #X7835.
Figure 3-25 Ending
MainGUI.exe in Task ManagerYou should now be able to open ALP normally. If the problem persists, restart your machine and follow the steps again.