AFTER EFFECTS CRASHES WHEN AUTOSAVE EVEN WHEN RENDERING

iMac (Retina 5K, 27-inch, 2017)

3,8 GHz Intel Core i5 de 4 núcleos

64 GB 2400 MHz DDR4

Radeon Pro 580 8 GB

This is a Nightmare... AE crashes everytime it run autosave. I try to uncheck the autosave item, but the program its still autosaving the project EVEN WHEN ITS RENDERING!!!! And then, crashes!!

It´s happening with all types of projects: complex or not. 

Im using the last upgrade of After Effects, and I´ve tried to unistall and installing again. 

Im attaching two error messages within minutes of diference so you can see whats happening. This messages occurred when rendering. 

¡Please help!