Spreadsheet - Error when opening form

[Stefan]

We have a form in our application with just a RadSpreadsheet element that loads a local Excel file. 

It works fine on the machine we developed the appplication on. After we installed it on our machine for testing we get the following error when opening the form (full exception in attachments):

"Type 'Telerik.WinControls.UI.RadButtonAccessibleObject' has a ComVisible(false) parent 'System.Windows.Forms.Control+ControlAccessibleObject' in its hierarchy, therefore QueryInterface calls for IDispatch or class interfaces are disallowed."

The spreadsheet is then also crossed out in red.

 

Is there maybe something we are missing here?

 

[Nadya | Tech Support Engineer]

Hello, Stefan,

It is strange that you receive such error when loading a local Excel file in RadSpreadsheet control. However, in order to investigate it further I would need first to replicate the error locally on my side. How exactly you load the document? Is it possible for you to provide a project that can replicate the exact problem. This would be very helpful to determine the issue. Otherwise I can not determine what exactly is happening.

Thank you in advance for your cooperation. I am looking forward to your reply.

Regards,
Nadya | Tech Support Engineer
Progress Telerik