Error: Node instance "" instantiates undefined entity "sld_reserved__<SignalTap II name>_<trigger number>" - Error: Node instance "" instantiates undefined entity "sld_reserved__<SignalTap II name>_<trigger number>" Description This error message occurs in the Quartus® II software version 6.0 and later under the following conditions: You compile the design from a system command prompt The design includes a SignalTap® II logic analyzer No database (< project > \db ) directory exists, or it exists but does not include the file sld_reserved_ < project >_< SignalTap II name >_< trigger number >.v when you compile the design Use one of the following suggestions to work around this problem: Before you compile the project at a system command prompt, open the Quartus II GUI, then open and save your project. This process recreates the missing file. Do not delete the file sld_reserved_<project>_<SignalTap II name>_<trigger number>.v when you delete files from the db directory. This problem may be fixed in a future version of the Quartus II software. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['novalue'] novalue novalue ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']