I’m planning on removing the “mcpuk” File Browsers folder from the official distribution package of FCKeditor starting from the next version (today we have 2.1.1). We are not able to maintain that files and there are also some licensing issues with it.
It doesn’t means that it will not be available anymore. Its dedicated web site is still available at http://mcpuk.net/fbxp/ and it would be nice to still be maintained. If mcpuk can’t continue its development, maybe someone could get his project and continue it. I suggest contacting mcpuk to discuss it.
Mcpuk File Browser Removal