Rhino 6 Grasshopper Crash


I updated my Rhino 5 to Rhino 6. Since then I am not able to use
it properly. As soon as I link a surface from Rhino with Grasshopper it crashes.
Without any warning. If I link curves or points in Grasshopper I don’t have those problems.
Do you have any suggestion what might be wrong?
I hope you can help me.

Best regards

Here are my PC specs:

Rhino 6 SR14 2019-5-7 (Rhino 6, 6.14.19127.17141, Git hash:master @ 5b633aaa430941b76f5789a0ce3bb670ce06947a)
License type: Commercial, build 2019-05-07
License details: Stand-Alone

Windows 7 SP1 (Physical RAM: 16Gb)
Machine name: WEILOR-PC

Non-hybrid graphics.
Primary display and OpenGL: AMD Radeon HD 7800 Series (AMD) Memory: 2GB, Driver date: 2-15-2013 (M-D-Y). OpenGL Ver: 4.2.12172 Compatibility Profile Context

OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: On
Redraw scene when viewports are exposed: On

Anti-alias mode: 4x
Mip Map Filtering: Linear
Anisotropic Filtering Mode: Height

Vendor Name: ATI Technologies Inc.
Render version: 4.2
Shading Language: 4.20
Driver Date: 2-15-2013
Driver Version:
Maximum Texture size: 16384 x 16384
Z-Buffer depth: 24 bits
Maximum Viewport size: 16384 x 16384
Total Video Memory: 2 GB

Rhino plugins
C:\Program Files\Rhino 6\Plug-ins\Commands.rhp “Commands” 6.14.19127.17141
C:\Program Files\Rhino 6\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 6\Plug-ins\RhinoRender.rhp “Rhino Render”
C:\Program Files\Rhino 6\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 6.14.19127.17141
C:\Program Files\Rhino 6\Plug-ins\rdk_ui.rhp “Renderer Development Kit UI”
C:\Program Files\Rhino 6\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 6\Plug-ins\RhinoCycles.rhp “RhinoCycles” 6.14.19127.17141
C:\Program Files\Rhino 6\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 6.14.19127.17141
C:\Program Files\Rhino 6\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 6\Plug-ins\Displacement.rhp “Displacement”

Your video driver is from 2013…

Thank you very much! That must have been the problem.

Best regards