After a year of trouble-free operation of the KIS 2014 I ordered the fix for 3 PC's and started to install the update on a laptop. Then I had four hours effort to resolve the issue again. KIS 2015 update produced incessantly blue screens and an external hard drive could not be opened. Much research and countless attempts of repair brought nothing. The solution was to uninstall the Kaspersky Revomal tool because a normal uninstall on Windows did not work either. Then in 2014 I have downloaded and installed the old version of KIS as a trial version and activate with the code that was here at the 2015er version here. So far, the system is rebooted.
At the 2nd laptop I have the update disc does not even used, but only install the activation code for another year. The running smoothly.
I can not recommend using the update CD so. It took me half my free day of the carnival. So far, I have always been satisfied with Kaspersky. Next year I am going to look for something else.
Addendum: The old version KIS 2014 runs properly used with the new code. Therefore, now 3 star.