COM Exception while closing Drawing Document in Inventor 2018

[Anonymous]

Hello,

I am software developer working on Design Automation tool that is using Inventor COM library for Auto generation of Model & drawing.I am migrating from Inventor 2016 to Inventor 2018.Now I am referencing Inventor 2018 object library in my project.

Now I am getting COM Exception message as "The remote procedure call failed" & Source is 'mscorlib' in my code while trying to close a drawing document which is terminating Inventor Application.This exception occurs only when I manually open Inventor 2018 after that I run my standalone application.The Exception will not occur when Inventor Instance is created by my application.

I am getting exception in following block of code

GCADSingleton.Instance.ofrmProgress.SetProgressBarValue("Placing Base and Section View.....", False)
'Open the active document and its drawing document
oIptDoc = GCADSingleton.Instance.oIptDoc

'Get drawing documnet using filename from open files
oDrawdoc = GCADSingleton.Instance.oDrawdoc

Dim sDrapath As String
sDrapath = oDrawdoc.FullFileName

oDrawdoc.Close(True) 'Excption at this line

Please refer attached screenshots for more details

I am stuck at this point so any help will be Highly Appreciable 

Thanks in advance

Ajit Nikam

[bradeneuropeArthur]

Hi,

Seems that the reference to the correct InventorApplication is wrong.

You are trying to close a document, but the standalone application is referencing to the wrong app (the manually started application)

Try to declare your Inventor.application as early as possible, so that the manual started application will have no influence on the standalone application.

If support is needed, please let me know.

[Anonymous]

Hello Braden,

My standalone application check the inventor instance first,if it is already running then it connect to running instance of inventor otherwise it create new inventor instance.I have checked & found that my standalone application is referencing the correct inventor instance.My application successfully generated the Model(which is opened visibly false)  when it  comes for drawing generation it throws mentioned exception.

My code for getting Inventor App is as follows

Public Sub LaunchInventor()

On Error Resume Next
oApp = Nothing
oApp = DirectCast(Marshal.GetActiveObject("Inventor.Application"), Inventor.Application) 

If oApp Is Nothing Then

For Each p As Process In Process.GetProcessesByName("Inventor")
p.Kill()
Next

oApp = DirectCast(CreateObject("Inventor.Application"), Inventor.Application)

End If

oApp.ScreenUpdating = False
oApp.Visible = True
oApp.WindowState = WindowsSizeEnum.kMinimize

' Added by Rohini for inventor content center issue
Dim oCCAddin As ApplicationAddIn
oCCAddin = oApp.ApplicationAddIns.ItemById("{3D88D7B5-6DD8-4205-A2B5-2B51F7BF74A7}")
oCCAddin.Activate()

ActivateVaultAddin()

While Not oApp.Ready
Threading.Thread.Sleep(5)
End While
End Sub

[Anonymous]

Hello Braden, the mentioned exception never occur after installing Inventor 2018.2 update

[bradeneuropeArthur]

I have seen that some unexpected error have been updated in the .2 release too.

Solved then for the moment?

[Anonymous · Accepted solution]

Yes,the Inventor 2018.2 solved the problem