Client/Server Error: BadIDChoice

[3nc31]

Most Qt code is in the rest of the file....but I don't have any problems with the rest, I have problems when I want to show a new window on startProcess():

waitForChat(portWait, name, &portConnect); //When waitForChat finish, 
// means that other client request for Chat, 
// so the application must show the new window chat.
windowChat = new Chat;
windowChat -> show();

waitForChat(portWait, name, &portConnect); //When waitForChat finish, 
// means that other client request for Chat, 
// so the application must show the new window chat.
windowChat = new Chat;
windowChat -> show();

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If I commented out this part of the code, the compile error doesn't occur, but I need show a new window...so...