Engine error

It is time for me to send my pc to repair . To many bug and error and no memory space .

I can’t continue with all of this , when I want export for test (my animation ) he say me error engine “CUtlRBTree Overflow” and it crash. I don’t know why just 2 model no many props , not really different than other save.And I fight with my last 1-2GO on my ssd (SFM work only on ssd and other software)

My pc configuration =

Laptop Asus Window 10

Intel core i7-6700HQ 2.60GHz, RAM 16,0 GO, Processor 64bits, Memory C (ssd 118GO),Memory D ( 1To)  NVIDIA GeForce GTX 960M