I found that in xp only the beta would occasionally loose the icon from the task bar and the desktop shortcut plus opening via program's would not work. no idea why it occasionally turns off.
in my case a reboot solves the problem on a temp basis.
OnePlus 5 review
Alice Saey's mesmerising animation for Dutch singer Mark Lotterman
iPad Pro 10.5in (2017) review
Comment booster votre iPhone ?