Random license-message in documents

In about two weeks ago we started receiving reports from our customers, that some of our documents are containing the message "Evaluation Only. Created with Aspose.Words. Copyright 2003-2011 Aspose Pty Ltd".

After having examined the code, we still weren't able to explain this behavior. So we made some monitoring to examine the problem.

The software is a batch program that runs every 10'th minute starting each day at 5 am. (Danish time), sending reminders to our customers. Today the first two runs were reporting problems with the Aspose license. The attached log-files (first_run.txt, secon_run.txt) shows this behavior. The log-file contains two kinds of messages

  1. "Reminder sent" - indicating that a reminder-document was generated by the system and sent to the customer
  2. "Reminder contains Aspose license message" - indicating that the generated reminder-document contained the licens message

As you can see in the logfiles all is fine most of the time, but a few times we get this error - and the error seems to appear quite randomly.

The license is applied as described in your documentation (http://www.aspose.com/docs/display/wordsnet/Applying+a+License)

Hi Henrik,

Thanks for your inquiry. Please make sure the license file was not modified i.e. the license file becomes corrupted if it’s modified in any way and it’s digital signature does not match the content of the file. Please make sure you did not open the license in notepad or something like that and edited it, even adding an empty line can break this license file. Also, please post your license file via mail to us. We will investigate the issue on our end and provide you more information. In order to post your license file to us please follow the instructions provided in the following link:
http://www.aspose.com/corporate/purchase/faqs/send-license-to-aspose-staff.aspx

Moreover, it would be great if you please create a standalone/runnable simple application (for example a Console Application Project) that helps me reproduce your problem on my end and attach it here for testing. As soon as you get this simple application ready for me, I’ll start investigation into your issue and provide you more information.

Hi Lars,

Thanks for sharing the
code/license via email. I have tested the scenario multiple times but
have not found the shared issue. I would suggest you please upgrade
to the latest version (v13.9.0) from here and let us know how it goes on
your side.

Moreover, please call License.SetLicense in your start-up code, before using Aspose.Words classes. You do not need to call License.SetLicense in ConvertWordToFormat method. Please also create a log file at your side to find out the input documents for which you are getting evaluation message in output documents.

Once you have those documents, please share them with us along with following detail for investigation purposes.


  • OS (Windows Version)
  • Architecture (32 / 64 bit)
  • .NET Framework version


Hi Tahir

Thanks for your reply. I will try to upgrade to the suggested version to see if that makes any difference.

Best regards Lars

Hi Lars,

Thanks for your feedback. Please let us know if you have any more queries.