Why do cut/copy/paste keyboard shortcuts not work?
If you are having trouble with keyboard shortcuts for cut, copy, or paste in IBIS, try releasing the X, C, or V key before releasing the Ctrl key. In Flash (IBIS is Flash-based), you must first release the key Ctrl modifies. For example, if you want to copy something, you have to press Ctrl, then press C, then release C, and then release Ctrl.
If you have problem with the keyboard shortcut of PowerPoint like cut, copy and paste shortcuts then you can use PowerPoint ShortcutTools software. You can customize the shortcut keys according to your choice. It will help you to design your PowerPoint slides easily.