I installed mysql today to developer studio in my machine, functioned perfectly, I ordered to compile one procedure for debug. Only that to test, I had that to change the date of the machine, which had to the data, so that in the result it found given. After this process, does not function more, showing to a message "trial Sorry your period expired". As I make to use per the 30 days, or as I make to come back mine procedure to the normal one, therefore in source I verified that it was modified.
Thanks,