Why do I get build error "SEVERE: java.lang.RuntimeException: Error in Tcl script C:\altera\72\ip\nios2_ip\altera_nios2\altera_nios2_hal_sw.tcl" - Why do I get build error "SEVERE: java.lang.RuntimeException: Error in Tcl script C:\altera\72\ip\nios2_ip\altera_nios2\altera_nios2_hal_sw.tcl" Description Quartus® II keeps a cache folder of older version components in C:\Documents and Settings\<username>\.altera.quartus\ip\9.1\ip_search_path\user_components.ipx. Delete this cache if you do not need them anymore. If you cannot find this cache folder in C:\Documents and Settings, check the location of your HOME environment in System Properties -> Advanced -> Environment Variables. Find this cache folder location according to the HOME environment setting. Related Articles Why do I get build error launching external scanner info generator? Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['novalue'] novalue novalue ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']