out of memory error

[energystaff]

Hi

The point is whenever I wanna export rockplot 2D map to the google earth(KMZ) , if I choose” surface contours” before press process button , then after that I would face with error message that says out of memory but if I just don not choose surface contours then the process will continue smoothly also I think it’s necessary to add that as of yet I only have had this problem with 2D and at the same time I didn’t have any problem with 3D with the same data.so please help me to cope with this problem.'i'm using Rockworks16&google earth7.1 version'

thanks a lot