Cause
If memory-resident software is installed, GP-Pro EX may terminate forcefully.
Memory-resident software is an application program for which the icon is displayed on the taskbar and is always active.
Solution
Follow the procedure below and try starting GP-Pro EX again.
If any memory-resident software is installed, right-click its icon to show a context menu, terminate the software, and then try starting GP-Pro EX again.
If GP-Pro EX does not start or terminates abnormally even after step (1), exit from all running applications and try starting GP-Pro EX again.
If GP-Pro EX does not start or terminates abnormally even after steps (1) and (2), uninstall GP-Pro EX once and then reinstall it.
Before starting install-related operations (installation, repair installation, uninstallation), be sure to exit from all application programs.