Hi Phibo, I have got the solution from Nitro and it worked 100% so the Notro Pro 11 is now working
Below I will paste the answer and solution....succes and let me know if your problem is solved.
Regards fron The Netherlands,
Nicolaas
ANSWER and solution here below:
What might be causing the program to crash is a stackKey called LavasoftTcpService. This file is installed within your system when you download adware programs.
Although this has been frustrating, this does not have to do with Nitro. It is only affecting the program.
To clear up this issue, so that you can open the program, Microsoft suggests removing the LavasoftService.
Please run the free tool I have provided below, and once it has completed removing the adware on your system, retry opening Nitro, and activating the program with the serial key I gave you: http://www.bleepingcomputer.com/download/adwcleaner/