Please see the most recent updates in the "Where did the .com name go?" thread. Posts number 16 and 17.
Please see this thread for updates. Update Thread
SOH ADMINISTRATION...but wouldn't be the easy fix just to get going again either
to delete the uisel.xml file or
to edit it by replacing the entry for "Own aircraft" to a stock model (name of .m3d file), which works.
and then checking the aircraft that caused the problem?