SEP 12.1.4013 causes tlist.exe to hang

I have tried searching here and the general internet for this and have come up with nothing.

After I install SEP 12.1.4013 client on a Windows Server 2008 machine the MS program of tlist.exe will not function correctly - it just hangs.

Once I uninstall SEP and reboot, tlist.exe will run as intended.

Has this been observed by anyone else?

Thanks.