Please provide more details about your computer.
Turn off GPU Acceleration under File > Project settings > General and see if it works.
Thank you RameezKhan
My Computer is Mac Pro 15" with ritna
2.6 GHz Intel Core i7
8 GB 1600 MHz DDR3
NVIDIA GeForce GT 650M 1024 MB
It is working with Software Mode But I got many problems with rendering So i need to use GPU Mode But Stop working directly when i import media the clips
Have you tried updating CUDA?
yes i did ...