Error: Plugin init for plugin 'geoip' failed with return code: Undefined subroutine &Geo::IP::GEOIP_STANDARD called at c:\inetpub\wwwroot\awstats/plugins/geoip.pm line 74, <DATA> line 262. (A module required by plugin might be missing).

Setup ('c:\inetpub\wwwroot\awstats/awstats.sieveonline.com.conf' file, web server or permissions) may be wrong.
Check config file, permissions and AWStats documentation (in 'docs' directory).