Error: AWStats database directory defined in config file by 'DirData' parameter (C:/tuscany/tussito/statis/awstats_root/data) does not exist or is not writable.

Setup ('C:\TUSCANY\TUSSITO\STATIS\awstats-7.0\wwwroot\cgi-bin/awstats.xhb.conf' file, web server or permissions) may be wrong.
Check config file, permissions and AWStats documentation (in 'docs' directory).