AT&T communication manager wont stay installed?

AT&T communication manager (for laptop aircard ?) wont stay INSATLLED even though the AT&T icon is downloaded on my desktop screen. Every time i startup my computer TRU-INSTALL (Sierra Wireless) pop-ups force me to re-install the manager. Happens every single time. Computer itself works fine except for this feature. Without re-installing each time, no connection. No AT&T updates available at this time. Any advice?