Rhino 4 SR6 released

Rhino 4 Service Release 6 is now available to download. Owners of Rhino 4 are encouraged to download and install SR6 today. SR6 contains dozens of stability and crash fixes, as well as enhancements to many commands, including:

• Block: A warning about blocks with no geometry has been added.
• Open: A confirmation message now appears on the command line.
• Save:STL - Interface change: The options and prompts for a scripted export of file formats that use the STL mesh setting have been changed to more closely resemble the settings of the Mesh command.
• Starting Rhino on Vista Improved: previous releases of Rhino 4.0 sometimes would only start when run as Administrator. SR6 should start without administrator permissions.
• BlockManager: Hidden blocks (with * prefix in the name) did not display correctly. This is fixed.
• CopyViewportToDetail failed after the first time the command is run. This is fixed.
• Dim: The hyphen between feet and inches sometimes did not display. This is fixed.
• DocumentProperties, Render: The Lock viewport aspect ratio was incorrectly not maintained after closing the dialog box. This is fixed.
• ExtrudeSrfTapered: Failure bug fixed.
• Insert: A problem with creating layers after the insertion was canceled has been fixed.
• Installer: A file required for ZPR export was not being installed. This is fixed.
• Linetypes: The Document Properties Linetype scale incorrectly allowed 0 as a value. This disabled linetypes. This is fixed.
• Loft command crash fixed.
• Loft: Several bugs that caused an incorrect surface have been fixed.
• MacroEditor: A problem with focus to the command line has been fixed.
• Open:DWG/DXF: A problem opening DXF files has been fixed.
• Open:DWG: Splines did not read properly. This is fixed.
• Open:OBJ: Files imported from topmod3D had some gaps. This is fixed.
• Open:OBJ: OBJ data was not read correctly by Service Release 5b. This is fixed.
• Open:SKP: An import error has been fixed.
• Options, Appearance: The Full path in titlebar option did not work properly. This is fixed.
• Options, Appearance, Advanced Settings: The Export button was incorrectly available even when no scheme is selected for export. This is fixed.
• PointDeviation: The Apply button did not work correctly. This is fixed.
• RhinoScript: The RhinoScript page of Options incorrectly allowed the same script file to be added more than once to the list of files to load at startup.
• Save:3DS: A problem with importing and exporting has been fixed.
• Save:DWG/DXF: Support for exporting ACIS solids has been added. Create or edit a named export scheme, and change the export option for Rhino surfaces to AutoCAD Solids.
• Scale1D did not properly update CurvatureAnalysis colors. This is fixed.
• Toolbar: Graphic images were garbled when toolbar was imported. This is fixed.
• TriangulateNonPlanarQuads: A problem with the selection calculation has been fixed.

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