This error may be seen in the Quartus® II software version 9.1 when non-rectangular LogicLock™ regions are used in a design.
To work around this problem in the Quartus II software version 9.1, follow the steps below:
- Create a text file named quartus.ini in your project directory, unless one already exists.
- Add the following text to the quartus.ini file:
- Restart the Quartus II software to make use of this .ini variable.
This problem is scheduled to be fixed in a future release of the Quartus II software.