Commented Unassigned: Excel Addin sample does not show task pane [22319]

Hi,

I tried a sample solution "NetOffice Excel Addin Examples", the project "NetOffice Tools - Extended". I use Excel 2013 on Windows7 64 bit. After compiled I can see the the addin "NetOfficeTools Extended Example CS4" in Excel. The button "About" works, but the button "Sample Pane CS4 Visible" does nothing.

I wrote a simple project which creates a new Excel Application and open a workbook from the path. In this case I can see the task pane and I am able to switch it on and off.

Could you help me please?

Thanks
Jiri
Comments: Hi Sebastian, thank you for your answer. I try to describe the problem in more detail. I use NetOffice 1.7.3 and the sample project "d:\Projects\Libraries\NetOffice 1.7.3\NET 4.5\Examples\Excel\C#\IExtensibility COMAddin Examples\IExtensibility Excel Addin Examples.sln" . I have built the project "IDTExtensibility2 - Taskpane". When I start Excel 2013 for a new workbook I cannot see the pane and the addin is not in the ribbon. But if I go to "Developer - COM Addins" an uncheck this COM Addin, press OK, check COM Addin, press OK - now I can see the pane. But after saving and new opening the workbook I cannot see the pane again. Thanks, Jiri