ReleaseActionButton Could not release the model...

[EIChrisP]

I'm getting the following error at the very end of the AfterRelease event, in what appears to be a final refresh.  

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RuleStream.Designer
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ReleaseActionButton



Could not release the model. Exception: Object variable or With block variable not set.
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OK   
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I have two quoting applications that I'm running from a third application that replaces the default Project/Line Item UI. After release (from with a quote line item), I save the model and load the PLI UI.

When I release from one application, everything works correctly, no error. But when I release from the other application, I get this error at the end of the AfterRelease event. Both apps use the same AfterRelease event code:

    Public Sub g_RsEngineer_AfterRelease(ByVal sender As Object, ByVal e As EventArgs) 'Handles g_RsEngineer.RsAfterRelease
        RS_Message("Custom.vb g_RsEngineer_AfterRelease()", "Caught After Release Event", RS_ERR_INFO, OnlyLogReleaseEvents())
        If RootPart.IsCPQ Then
            ' Change to Quote Management Mode
            RootPart.Properties("AppMode").InputValue = "MANAGE"
        End If

        g_RsEngineer.SaveModel()
        ' original line item
        Dim oriProjectID As String = RootPart.ProjectID
        Dim oriLineItemID As String = RootPart.LineItem
        ' Check in original line item
        CheckInLineItem(oriProjectID, oriLineItemID)
        ' open PLI interface
        Dim pliProjectID As String = RootPart.ToConstants(1).PliProjectID
        Dim pliLineItemID As String = RootPart.ToConstants(1).PliLineItemID
        Dim pliProcessName As String = "DefaultProcess"

        g_RsEngineer.RsDesigner.LoadModel(pliProjectID, pliLineItemID, pliProcessName)
        'g_RsEngineer.RefreshModelViews(0)
    End Sub

I was getting the error in the last RefreshModelViews(0) before I commented that out, not it happens later in what appears to be a final refresh. 

Using RS 8.15.1 on WIN7

[EIChrisP]

While it worked in some cases, the LoadModel() call isn't really allowed there like that. 

I'm trying to automate a final save and close after the release is complete. The profile will load the correct project/line item, so a simple close at the end of AfterRelease() would suffice, but when I tried CloseModel() instead of LoadModel() it threw a similar error. 

For now I'm having the user click a save and close button once release is complete until I can figure out how to automate the close.