Quote: "I've updated from version 1.0 to version 1.19 in order to solve some problems. And now I can't build executables. It says I have to upgrade the program to build. Do I have to pay for it AGAIN?"
If you bought FPSC (full version) and are not using their "Free Version", then you need to check your "userdetails.ini" file. Chances are when you ran the update, it reset the "ini" file and your username/serial are not present. This is not the first time it has happened- many have experienced the exact same issue with running an update.
All you have to do is edit the file, enter your name and your serial again. There is a thread
here to help if needed.

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