Quartus ll

versuche gerade mich mit quartus zu beschäftigen habe ein verilog file
eingegeben die sytax ist ok aber wenn ich den compilieren will bekomme
die diese meldung

weiss jemand abhife

Info:
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Info: Running Quartus II Analysis & Synthesis
  Info: Version 5.0 Build 148 04/26/2005 SJ Web Edition
  Info: Processing started: Mon Jun 27 21:32:22 2005
Info: Command: quartus_map --read_settings_files=on
--write_settings_files=off count -c count
Info: Found 1 design units, including 1 entities, in source file
count.v
  Info: Found entity 1: counter10
Error: Top-level design entity "count" is undefined
Error: Quartus II Analysis & Synthesis was unsuccessful. 1 error, 0
warnings
  Error: Processing ended: Mon Jun 27 21:32:22 2005
  Error: Elapsed time: 00:00:00