I replied to your other post but I will here also.
Can you give more info? What OS? 64/32 bit. Free CFX or paid?
Did it work before and when did it stop?
Will the control panel show/select any previews or cursors?
If the control panel is frozen, one thing you can try is go to: C:\Program Files (x86)\Stardock\CursorFX and r-click on CursorFX Control Panel.exe. Select Properties/Compatibility Tab. Run in Compatibility mode for Vista (Service Pack 2). Hit Apply, then try launching CFX.
No , Impulse shouldn't be needed unless you installed CFX with it. If so, then you should use it to uninstall CFX, then download CFX from the store and reinstall.