Blender attribute error user preferences system object has no attribute computer...

Hi

I got this frequently error in console, the performance slow downs a bit.
blender attribute error user preferences system object has no attribute computer device type

But can render and preview without problem with Cycles.

Any help is welcome.
Ty in advance

Specs:
testing Blender 2.78a and daily builds
i7 K875 2.93Ghz
RAM 14gb
GTX 650TI -graphic driver are up to date-


it looks like the asset manager addon can find a setting. try going into system in the blender preferences and setting your compute device to none, then back to cuda, then save settings and restart blender. or reset your settings all together.

Ty Daedalus.
To delete all folder content and unzip 2.78a again solve the issue.

sidenote:
nightly builds give same error on 3 PCs.