Celestia Forums

i have been wanting to add new content to Celestia, but everytime i try to add new things i get a Fatal Error window that pops up that says invalid Filetype?!?! any idea on what this means or how i can fix the problem?

Please read the Web page http://www.lns.cornell.edu/~seb/celestia/addon-intro.html

If you're using Windows, it probably has given your Addons the wrong filetypes.

You need to disable "Hide extensions for known file types". If you're using XP,
Open any "explorer" file view window.
Select the "Tools" menu.
Select "Folder options..."
Select the "View" tab.
Clear the check box "Hide extensions for known file types"
Select the button "Apply to all Folders"
Select the "Yes" button in the popup query window.
Select "OK" in the Folder Options menu

Then go back to the files you've created and rename them so that they actually have filetypes of .SSC, .STC, .DSC, etc.

Does this help?