Thanks for the aun. With right click->properties->unlock is ok.

Ok, it is good to hear that this fixes the problem.

a little question in connection with the contest rules: should it include source code or not?
(I personally dislike when no source is included in contest entries)

Thank you, George

@Sivan: The projects don't need to include the source code. If you think that more people will vote for you because you've included the source, feel free to do that as well.

@Tempelbauer: You are most welcome

okay thanks, it is sure I will do something somehow