Error: Couldn't open server log file "C:/WINNT/system32/LogFiles/W3SVC1/ex100906.log" : No such file or directory

Setup ('C:\Inetpub\wwwroot\cgi-bin/awstats.www.radiokosova.net.conf' file, web server or permissions) may be wrong.
Check config file, permissions and AWStats documentation (in 'docs' directory).