fckeditor.html is loading as file... Pls help

I have a CMS with pre-installed fckeditor 2.0 and on my virtual hosting after installing I get a message that browser is trying to load fckeditor.html as html-file! After that I get grey areas instead of textareas with editor and I have not access to them. I suppose it has something to do with my hosting. I tried to load pages to different browsers (IE and Firefox) and I got same results. Pleas help me.