You may get this or similar error when attempting to unspike a spiked edition:

In such case, export the object with the conflicting id, in the above example it is 8349693 (it's the id of the text geometry in the error). To export it using the command:

srv4 export -ids 8349693 -out c:\geometry.xml

Once exported, edit the geometry.xml and change the name to something else. Save it and reimport it with the command:

srv4 import -in c:\geometry.xml

This should fix the unspike problem.