DR rendering: prevent sketchup from linking textures to var/folders

[sebastien_berthier]

After sketchup crashes, it often links the textures of some material locally (in a folder called
"/var/folders/.../ChaosGroupTextureCache"). This was not a problem in itself until i started to use distributed rendering...
is there a way to prevent sketchup from altering the materials (changing the texture names and aiming to find them locally)?

cheers

/sebastien