Here is something to note; It is important to switch off the anti-virus when installing the program and crack. This is also stated in the instruction text. Even though, installation may appear problem free with the anti-virus running, the program may encounter some problems during actual running.
My first install with anti-virus running, I was Not able to add symbols. The program just crashed when I add symbol. So I decided to follow close instructions and re-install with the anti-virus switched off.
After that, I was able to add symbols without the program crashing.
Another point in the instruction text is to run in Administrative mode. I was not able to see any difference in doing this yet.
Anyway, this is my take and other's experience my differ. Do note, that installing with the anti-virus turned off, the risk is yours.