Revit 2020 Datasmith plugin for engine 4.25 error: input curve is not bound

[kg4mfq]

While using the 4.24.3 Datasmith plugin I have been able to export one of my building models. When switching to the 4.25 version I get an error which appears to indicate that a sketch is not forming a closed loop. I've tried iteratively removing elements and attempting to export the model but with no success in finding the culprit or culprits. I removed the 4.25 plugin and reinstalled 4.24.3 and am still able to export without issue.

Strangely enough both version of the Datasmith plugin work absolutely fine with the out-of-the-box sample Revit projects. There's something in my model causing this however I can't locate it. Would it be possible to surface the element set to the error dialog box? Below is a snippet from my journal file.

' 0:< ::210:: Delta VM: Avail -39 -> 134209929 MB, Used +48 -> 1122 MB, Peak +25 -> 1122 MB; RAM: Avail -36 -> 23012 MB, Used +38 -> 1166 MB
' 0:< GUI Resource Usage GDI: Avail 9173, Used 827, User: Used 549
' 0:< View Open: Element expansion used 0.258537 seconds averaging 0.003042 seconds/hit for 85 hits.
 'E 12-May-2020 19:46:23.239;   0:<
 Jrn.Size        0 ,   1575 ,    802
 'H 12-May-2020 19:46:23.240;   0:<
 Jrn.Directive "WindowSize"  _
         , "[SSLC - commercial-2020.rvt]", "3D View: {3D}" _
         , 1575, 802
'H 12-May-2020 19:46:23.266;   0:<
Jrn.Directive "ProjToPage"  _
        , "[SSLC - commercial-2020.rvt]", "3D View: {3D}" _
        , 405.14125024603783 _
        , 405.14125024603783, 0.00000000000000, 0.00000000000000 _
        , 0.00000000000000, 405.14125024603783, 0.00000000000000 _
        , 0.00000000000000, 0.00000000000000, 405.14125024603783 _
        , 0.00000000000000, 0.00000000000000, 0.00000000000000
'H 12-May-2020 19:46:23.266;   0:<
Jrn.Directive "ProjToPage"  _
        , "[SSLC - commercial-2020.rvt]", "3D View: {3D}" _
        , 405.14125024603783 _
        , 405.14125024603783, 0.00000000000000, 0.00000000000000 _
        , 0.00000000000000, 405.14125024603783, 0.00000000000000 _
        , 0.00000000000000, 0.00000000000000, 405.14125024603783 _
        , 1021.45796931046812, -540.38294194611672, 0.00000000000000
'H 12-May-2020 19:46:23.327;   0:<
Jrn.Directive "ProjToPage"  _
        , "[SSLC - commercial-2020.rvt]", "3D View: {3D}" _
        , 405.14125024603800 _
        , 405.14125024603800, 0.00000000000000, 0.00000000000000 _
        , 0.00000000000000, 405.14125024603800, 0.00000000000000 _
        , 0.00000000000000, 0.00000000000000, 405.14125024603800 _
        , 1021.45796931046812, -540.38294194611672, 0.00000000000000
'H 12-May-2020 19:46:23.328;   0:<
Jrn.Directive "ProjToPage"  _
        , "[SSLC - commercial-2020.rvt]", "3D View: {3D}" _
        , 405.14125024603800 _
        , 405.14125024603800, 0.00000000000000, 0.00000000000000 _
        , 0.00000000000000, 405.14125024603800, 0.00000000000000 _
        , 0.00000000000000, 0.00000000000000, 405.14125024603800 _
        , 1021.45796931046766, -540.38294194611638, 0.00000000000000
' 0:< ::211:: Delta VM: Avail -57 -> 134209873 MB, Used +58 -> 1180 MB, Peak +57 -> 1180 MB; RAM: Avail -30 -> 22982 MB, Used +30 -> 1196 MB
' 0:< GUI Resource Usage GDI: Avail 9166, Used 834, User: Used 552
'  0.437704   1:<<<;PERF;MISC;drawing
'C 12-May-2020 19:46:23.802;   0:< idle0_doc
 'E 12-May-2020 19:46:24.267;   0:<
 Jrn.RibbonEvent "TabActivated:Add-Ins"
 'E 12-May-2020 19:46:25.585;   0:<
 Jrn.RibbonEvent "Execute external command:CustomCtrl_%CustomCtrl_%Add-Ins%Unreal Datasmith%Export3DView:DatasmithRevitExporter.DatasmithRevitCommand"
' 1:< ::213:: Delta VM: Avail -42 -> 134209831 MB, Used +13 -> 1193 MB, Peak +15 -> 1195 MB; RAM: Avail -31 -> 22952 MB, Used +25 -> 1222 MB
' 1:< GUI Resource Usage GDI: Avail 9096, Used 904, User: Used 574
'C 12-May-2020 19:46:28.541;   1:< printing
'  2.969132!!! 2:!!!BIG_GAP API External Command Time
' 2:< ::213:: Delta VM: Avail -781 -> 134209051 MB, Used +780 -> 1974 MB, Peak +779 -> 1975 MB; RAM: Avail -640 -> 22312 MB, Used +656 -> 1879 MB, Peak +641 -> 1880 MB
' 2:< GUI Resource Usage GDI: Avail 9111, Used 889, User: Used 587
' 2:< Exception caught from managed method RevitAPI::Autodesk.Revit.DB.XYZ GetCurveEndpoint(Autodesk.Revit.DB.Curve, Int32) <Autodesk.Revit.Exceptions.ArgumentException> <The input curve is not bound.
'Parameter name: curve>
'C 12-May-2020 19:46:46.804;  DBG_WARN: Exception thrown from an API exporter. Export cancelled in enum GRenderResults __cdecl VisAPIContext::drawElementNodeBegin(const class GElementRenderNode &). [The input curve is not bound.
'Parameter name: curve]: line 463 of d:\ship\2020_px64\source\interface\interfaceutil\visualization\visapicontext.cpp.
' 18.462816    2:<<<;PERF;MISC;drawing
'C 12-May-2020 19:46:47.029;   1:< view printed
' 0:< ::213:: Delta VM: Avail +446 -> 134209498 MB, Used -500 -> 1474 MB; RAM: Avail +412 -> 22725 MB, Used -420 -> 1459 MB, Peak +8 -> 1889 MB
' 0:< GUI Resource Usage GDI: Avail 9118, Used 882, User: Used 575
'  4.739537!!! 2:!!!BIG_GAP API External Command Time
' 26.419816   1:<<API External Command Time
'H 12-May-2020 19:46:52.016;   0:<
Jrn.Data "APIStringStringMapJournalData"  _
        , 0
' 0:< Error posted:
' 0:< Cannot export the 3D view:
'
'The input curve is not bound.
'Parameter name: curve
'
'   at Autodesk.Revit.DB.CustomExporter.Export(View view)
'   at DatasmithRevitExporter.DatasmithRevitCommand.Execute(ExternalCommandData InCommandData, String& OutCommandMessage, ElementSet OutElements)
' 1:< Invoked HandleDocFailure
' 1:< Error dialog has no callback because
'it was not provided in following error in error message
'Cannot export the 3D view:
'
'The input curve is not bound.
'Parameter name: curve
'
'   at Autodesk.Revit.DB.CustomExporter.Export(View view)
'   at DatasmithRevitExporter.DatasmithRevitCommand.Execute(ExternalCommandData InCommandData, String& OutCommandMessage, ElementSet OutElements)
' 1:< Error dialog data for transaction  in Host document
' 1:< Error: Cannot export the 3D view:
'
'The input curve is not bound.
'Parameter name: curve
'
'   at Autodesk.Revit.DB.CustomExporter.Export(View view)
'   at DatasmithRevitExporter.DatasmithRevitCommand.Execute(ExternalCommandData InCommandData, String& OutCommandMessage, ElementSet OutElements)
' 1:< Error dialog summary
' 1:< Error: Cannot export the 3D view:
'
'The input curve is not bound.
'Parameter name: curve
'
'   at Autodesk.Revit.DB.CustomExporter.Export(View view)
'   at DatasmithRevitExporter.DatasmithRevitCommand.Execute(ExternalCommandData InCommandData, String& OutCommandMessage, ElementSet OutElements) - 1 times
'H 12-May-2020 19:46:52.018;   1:<
Jrn.Data "Error dialog"  _
        , "0 failures, 1 errors, 0 warnings"
'C 12-May-2020 19:46:52.018;   1:< ADialog::doModal start
 'E 12-May-2020 19:46:54.621;   1:<
 Jrn.PushButton "Modal , Autodesk Revit 2020 , Dialog_Revit_DocWarnDialog" _
          , "Cancel, IDABORT"
'C 12-May-2020 19:46:54.653;   1:< ADialog::doModal stop
'  2.635576   1:<<EndOrAbortUndoTransaction();DOPT;
 ' 0:< ::214:: Delta VM: Avail +47 -> 134209545 MB, Used -45 -> 1429 MB; RAM: Avail +16 -> 22741 MB, Used -22 -> 1437 MB
 ' 0:< GUI Resource Usage GDI: Avail 9120, Used 880, User: Used 573
 'E 12-May-2020 19:47:01.811;   0:<

[Antoine_Guillo]

Hey kg4mfq,

Error might be caused by 2D drawings in your view, you can hide them to fix the export.
We should have fixed it with the 4.25 plugin so this is surprising to see it still causes issues.

Be sure to update to the latest revit plugin version, maybe you used a preview release that didn't have the fix yet ?

If the issue persists send me a private message and we'll get this sorted.

Cheers