Can only open 50 workbooks before getting exception "You are using an evaluation copy and have opened files exceeding limitation."

We have a valid license. I have a helper method that returns a Workbook like this.

public static Workbook GetWorkBookFromBytes(byte[] bytes)
Workbook workbook = new Workbook();


return workbook;

I can only open 50 workbooks before I get the exception.

If I just return a new Workbook, I can open 100 before I get the exception. This is a major issue for us since we are importing and exporting data on our ASP.NET server and can't have this limit.


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I found the issue. I thought I had set the license file when in fact I hadn’t. The worksheet that was created didn’t have the evaluation worksheet so I had assumed I was doing it correctly.