This error may be seen for designs targeting Cyclone® III devices in the Quartus® II software version 9.0 SP2 and earlier when a Clock Control Block is used with an incorrectly specified clock type.
A patch is available to fix this problem for the Quartus II software version 9.0 SP2. Download and install Patch 2.01 from the appropriate link below and then recompile your design.
Patch 2.01 for Quartus II 9.0 SP2 Windows.exe
For Linux:Patch 2.01 for Quartus II 9.0 SP2 Linux.tar
Patch Readme File:Patch 2.01 for Quartus II 9.0 SP2 (readme.txt)
This problem is scheduled to be fixed in a future release of the Quartus II software.