FCKeditor advanced profile issue

Hi
I am new to Drupal but am already hooked to it. I am using Druapl 6.14 and fckeditor 6.x-1.4. Everything was going on well until I decided to change the Advanced Profile settings under the fckeditor configuration window for integrating file browser modules. Whenever I change any settings there, my fckeditor just vanishes and I get back the default Drupal text box. I can't figure out wat's wrong. First I thought it was due to the module IMCE but I had no luck with integrating other modules like FileBrowser or even the default fckeditor file browser.

Please help.