The issue I’m about to describe happens for me on both Rhino 6 (Version 6 (6.22.20028.13212, 2020-01-28) and Rhino 7 WIP for Mac.
I re-downloaded Rhino 5 and this problem does not occur.
I’m running Catalina 10.15.2.
Whenever I try and export a file (also happens with export selected and export with origin) a prompt to as to where to save and what file format never comes up. The attached screenshot is as far as it gets. Therefore, the export function has stopped working all together for me and I have to close and re-open rhino to get it to start functioning again. I can save a file no problem, just cannot export.
I’ve also tried meshes, nurbs, lines - the issue happens with all geometries.
I’ve also uninstalled and reinstalled rhino and the issue persists.
Rhino 6 info:
Rhino 6 SR22 2020-1-28 (Public Build, 6.22.20028.13212, Git hash:master @ 379871ece695dc096e83826f08b429db8ca2e7f5)
License type: Commercial, build 2020-01-28
License details: Stand-Alone
Apple Intel 64-bit macOS Version 10.15.2 (Build 19C57) (Physical RAM: 32Gb)
Mac Model Identifier: MacBookPro15,1
Machine name: LAP567
Language: en-US (MacOS default)
AMD Radeon Pro 560X OpenGL Engine (OpenGL ver:4.1 ATI-3.4.19)
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: 4.1
Shading Language: 4.10
Maximum Texture size: 16384 x 16384
Z-Buffer depth: n/a
Maximum Viewport size: 16384 x 16384
Total Video Memory: 4 GB
Graphics: Radeon Pro 560X
Displays: Color LCD (258dpi 2x), HP 23er (96dpi 1x)
Graphics processors
Intel UHD Graphics 630 (1536 MB)
Radeon Pro 560X (4 GB)
Color LCD (1680 x 1050)
HP 23er (1920 x 1080 @ 60 Hz)
USB devices
Apple Inc.: USB3.0 Hub
Apple Inc.: USB Type-C Digital AV Adapter
Burr-Brown from TI: USB audio CODEC
Apple Inc.: Touch Bar Backlight
Apple Inc.: Touch Bar Display
Apple Inc.: Apple Internal Keyboard / Trackpad
Apple: Headset
Apple Inc.: Ambient Light Sensor
Apple Inc.: FaceTime HD Camera (Built-in)
Apple Inc.: Apple T2 Controller
Bluetooth devices
Broadcom: Magic Keyboard with Numeric Keypad
Broadcom: Broadcom Bluetooth Wireless Mouse SDP Server, Bluetooth Wireless Mouse, Broadcom Bluetooth Wireless Mouse PnP Server
Third party kernel extensions
com.getdropbox.dropbox.kext (1.10.3) F29DD0CB-48D6-311A-9B69-E39CF775493C
Third party plugins
/usr/lib/log/liblog_network.dylib
Rhino plugins
/Applications/Rhinoceros.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoCycles.rhp “RhinoCycles” 6.22.20028.13212
/Applications/Rhinoceros.app/Contents/PlugIns/NamedSnapshots.rhp “Snapshots” 6.22.20028.1002
/Applications/Rhinoceros.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/GrasshopperPlugin.rhp “Grasshopper” 6.22.20028.13212
/Applications/Rhinoceros.app/Contents/PlugIns/PanelingTools.rhp “PanelingTools” 6.22.20028.1002
/Applications/Rhinoceros.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/Commands.rhp “Commands” 6.22.20028.13212
/Applications/Rhinoceros.app/Contents/PlugIns/import_SKP.rhp “SketchUp Import” 6.22.20028.1002
/Applications/Rhinoceros.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RDK_EtoUI.rhp “RDK_EtoUI” 6.22.20028.13212
/Applications/Rhinoceros.app/Contents/Frameworks/RhMaterialEditor.framework “Renderer Development Kit” 6.22.20028.1002
/Applications/Rhinoceros.app/Contents/PlugIns/RhinoRender.rhp “Rhino Render” 6.22.20028.1002
/Applications/Rhinoceros.app/Contents/PlugIns/Displacement.rhp “Displacement” 6.22.20028.1002
/Applications/Rhinoceros.app/Contents/Frameworks/RhCore.framework/Resources/ManagedPlugIns/RhinoDLR_Python.rhp “IronPython” 6.22.20028.13212