Internal Error # 4406
 Temp file read error
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 An error was received when reading from a temporary file.  This error
 is most likely to occur when the disk where the temporary files are
 written is full.

 Free up the necessary space on the drive for the temporary file, or
 redirect the temporary file to a different drive via the TEMPPATH
 option of the Clipper environment variable.

 (CA Internal Error Listing 03OCT93)