VB.net Excel Add-in TaskPane not opening

Hi
I have an Excel 2007 Add-in with task panes. They open fine in Excel 2007 and 2010 but don't when the add-in is installed in Excel 2013.
This is a hard one to figure out? Is there perhaps extra code that I could use to force the task pane to open?
Thanks
Murray BrownMicrosoft Cloud Azure/Excel Solution DeveloperAsked:
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Ejgil HedegaardCommented:
I had a similar situation with an old add-in using Excel 2003 commandbars to make a menu.
It worked in Excel 2007 but not in Excel 2013.
The add-in workbook open event run, but the commandbars are not created.
I don't know why it is not working.
I solved it by delaying the run for 1 second, using Application.OnTime, and resetting the timer after run.
You can find the OnTime code here http://www.cpearson.com/excel/OnTime.aspx

I could build the delay in the code, but if that is not possible, you can use another add-in with the delay to open the task pane add-in, see attached file.
Then the Task pane add-in must not be in the Add-In list.

In attached file this code is in Module1

Option Explicit
Public RunWhen As Double
Public Const cRunIntervalSeconds = 1    'delay time 1 second
Public Const cRunWhat = "OpenAddIn"

Sub StartTimer()
    RunWhen = Now + TimeSerial(0, 0, cRunIntervalSeconds)
    Application.OnTime EarliestTime:=RunWhen, Procedure:=cRunWhat, _
        Schedule:=True
End Sub

Sub StopTimer()
    On Error Resume Next
    Application.OnTime EarliestTime:=RunWhen, Procedure:=cRunWhat, _
        Schedule:=False
End Sub

Sub OpenAddIn()
    Application.Workbooks.Open "C:\Test\TestAddIn.xlam" 'Change to actual add-in path and name
    StopTimer
End Sub

Open in new window


Change the file and path name to the add-in to open in the sub OpenAddIn

To activate the timer this is in the Workbook module
Private Sub Workbook_Open()
    StartTimer
End Sub

Open in new window

AddInOpen.xlam
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crystal (strive4peace) - Microsoft MVP, AccessRemote Training and ProgrammingCommented:
do the defaults allow code to run? Perhaps you need to look at the Trust Center Settings.
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Murray BrownMicrosoft Cloud Azure/Excel Solution DeveloperAuthor Commented:
Thanks for the assistance
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