>I'm using Aladdin Products to protect our application. We have 2 apps written using Fox2.6 for Dos and another one in VisualFoxPro 6.0. In Windows everything it's OK. Envelope works fine and we can use the API to program the Hasp key. The problem appear in Fox2.6. After running the Envelope, the exe is not working. There is some switchs about the overlay exe but nothing works. Applications was build as exe extended.
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>Is any solution for my problem?

Sure. Upgrade your application to VFP 7.