install application on mac

[stayTuned]

hi im having several problems with my mac.. which i've already downloaded the installer for skype, stuffit (to compress .zip file in mac), oovoo, etc but once I clicked on the installer and I want to install the application, the application logo has slash on it and I can’t drag it to the application folder. There’s also a message saying that “the application can’t be installed because this program is not supported on this architecture”..
what should I do for this case
Thanks a lot =)

 

[John T]

It's always a good idea to check, before installing software, that the App is compatible with the version of OS you are running on your machine.