That error indicates that the application tries to access a part of the memory which is already allocated to another installed software. The easiest way to fix it is to close all the background applications running on the same time you're trying to launch this one. Go to Start > Run > msconfig and switch to Startup tab. Disable all the applications and reboot the PC. This procedure is called clean boot. After this, run Task Plus Pro application and you'll see that it will run properly.