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Message on the slides- license renewal

I had a Aspose.Slides license but it expired.
Began to display the message "Evaluation only. Created with
Aspose.PowerPoint. Copyright 2004 Aspose Pty Ltd. ".
I bought the new license, replacing the license file,
but the message keeps appearing. What do I do?
Help me please please.


We are sorry for your inconvenience,

Can you please share that which version of Aspose.Slides you are using and please also share the license file with us, so that we may test the issue on our side. Please follow these guidelines while sharing the license file. We appreciate your cooperation in advance.

Thanks and Regards,

Dear Arthur,

We are sorry for the delayed response.

I have worked with the license file provided by you and it is working fine on my side. I am using Aspose.Slides for .NET 4.1.1, which is available here. Please share some further details, if your problem still persist even after using the above mentioned version of Aspose.Slides for .NET. Please also follow these license setting guidelines.

We are sorry for your inconvenience,