Laptop Wont Connect To AEM!!!!

[blageo23]

I tried to load a new MAP onto my AEM and it wont connect. I am using a serial connection and it was connected to the AEM and the computer with a solid connection. ECU has to be getting power because the fuel pump runs and the engine cranks over. I tried to uninstall the AEM software(I have been having trouble with it) but that did not work either. Anyone know what could be wrong or what to look for???