Fatal Error: Access Violation; Module: quartus_map.exe Lock in use: 9, (atm_amerge) - Fatal Error: Access Violation; Module: quartus_map.exe Lock in use: 9, (atm_amerge) Description Due to a problem in the Quartus® II software versions 12.0 SP2 earlier, you may see this error when compiling your design if your design has only one partition. Resolution A patch is available to fix this problem for the Quartus II software versions 12.0 SP1 and 12.0 SP2. Download and install the appropriate patch from the links below: Quartus II software version 12.0 SP1: Download the version 12.0 SP1 patch 1.22 for Windows (.exe) Download the version 12.0 SP1 patch 1.22 for Linux (.tar) Download the Readme for the Quartus II software version 12.0 SP1 patch 1.22 (.txt) Quartus II software version 12.0 SP2: Download the version 12.0 SP2 patch 2.24 for Windows (.exe) Download the version 12.0 SP2 patch 2.24 for Linux (.tar) Download the Readme for the Quartus II software version 12.0 SP2 patch 2.24 (.txt) This problem is fixed beginning with the Quartus II software version 12.1. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['FPGA Dev Tools Quartus II Software'] 12.1 12.0.1 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']