adobe air installation file

I am trying to download caller id on my pc. This download needs the adobe air installation file in order for it to download.

I have adobe air, but when I download for the caller id to be  installed I get this error message; "Application could not be installed because the installer file is damaged.  Try to obtain a new installer from the application author". I noticed on the forum that a few members are having the same problem. If it has been solved, please pass it on to me.

Just an afterthought, I have Comcast triple play which includes the pc caller id. Comcast does not repair computers, therefore I'm hoping this forum can help me. 

Thank you,

Teri Rossi