Java exception occurred: java.lang.NullPointerException at com.altera.dspba.cockpit.gui.deviceselector.DevicePanel.setFamily(DevicePanel.java:69) at com.altera.dspba.cockpit.gui.deviceselector.DeviceWindow.setFamily(Dev - Java exception occurred: java.lang.NullPointerException at com.altera.dspba.cockpit.gui.deviceselector.DevicePanel.setFamily(DevicePanel.java:69) at com.altera.dspba.cockpit.gui.deviceselector.DeviceWindow.setFamily(Dev Description On Linux operating systems, in DSP Builder v13.1 and later, you might see this error. Resolution To work around this problem, on Linux, before you launch DSP Builder, set the QUARTUS_ROOTDIR environment variable to the /quartus directory in their installation. This problem is fixed in DSP Builder v15.1. Custom Fields values: ['novalue'] Troubleshooting novalue True ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 15.1 13.1 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']