You might verify if security settings in IE (TWebOSMaps uses the IE browser activeX) prevent access/downloading certain needed resources such as http://www.tmssoftware.biz/webosmaps/OpenLayers.js
You might verify if security settings in IE (TWebOSMaps uses the IE browser activeX) prevent access/downloading certain needed resources such as http://www.tmssoftware.biz/webosmaps/OpenLayers.js