FTE files are temporary files.
Depending on the Permissions and Security setting of some Networks they may cause problems and it will be necessary to delete them if users to not have the correct access to these.
They can be located in the Data folder.
If the Message line in the Error includes ftexxx.dbf then delete these out, the path is identified in the top of the error message or in the Message Line.
They can be:
Examples of Temp Files are also: