WriteIt is a tablet PC utility from Lenovo that allows pen input. When this is installed, trying to open any application from the Start10 Universal Application list fails, and the screen flashes and redraws itself. Opening any application from the Windows 10 start menu works fine. If I uninstall the WriteIt utility, all of the apps open OK from the Start10 application list.
This problem appears with both Start10 V1.5 and the 1.52 beta.
I hope that you can get Start10 to be compatible with WriteIt. It is aggravating to have to go back to the Windows10 menu.