Getting "Fatal error in GC" Message?

Hi Friends.

When i upload my file to the asset Store, i am getting this error “Fatal error in GC” Message and the uploading process stopped, i don’t have any idea about this message, can any one help me to solve this problem,

the compressed unity package has around 400MB,

Thanks in Advance
Raja

Could you try the new upload tool that has been released recently and see if that helps.