Material-node suddenly missing

Hello community,

All the materials have suddenly become inaccessible on my own 3DX-plattform (owner). The material node on existing 3D-parts with applied materials have gone missing. When using "shading with material"-visual mode the rendering of the material still exist. In the Assembly Design-app, the material functions as "Material Library" and "Pick Material" is also gone. The materials is still in the database, but inaccessible.

This happened this morning after I made the latest HOTFIX-update, have anyone experienced the same issue?

Best regards,

William