Internet Config was unable to update your preferred file mappings. Are there any other programs running which might have those preferences open for write access at this time?

One or more errors were encountered while loading the saved Internet Config preferences. None of the settings can be changed at this time.

Internet Config was not able to return the list of file mapping preferences. It may be corrupt or not installed properly. Try restarting your computer and coming back to these preferences again.

Neither the Mac OS Internet control panel nor the Internet Config extension is active on your computer. Either  enable the Internet control panel or install the free Internet Config after downloading it from:

http://www.stairways.com/ic/

Internet Config is not active on your computer. You can get this free utility from:

http://www.stairways.com/ic/

Once it is installed and active, please come back to these useful preferences.