Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: - Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: Description Due to a problem in the Java version shipped with the Quartus® Prime Software version 17.1, you may see Java errors like this Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: sun.awt.image.BufImgSurfaceData cannot be cast to sun.java2d.xr.XRSurfaceData at sun.java2d.xr.XRPMBlitLoops.cacheToTmpSurface(Unknown Source) at sun.java2d.xr.XrSwToPMBlit.Blit(Unknown Source) at sun.java2d.pipe.DrawImage.blitSurfaceData(Unknown Source) at sun.java2d.pipe.DrawImage.renderIm........ Resolution To work around this problem, set the following jvm argument before launching Platform Designer. " -Dsun.java2d.xrender=fals e" e.g export QSYS_EDIT_JVM_ARGS="-Dsun.java2d.xrender=false" qsys-edit& or quartus& ->launch Platform Designer from the Quartus Prime software The Java version is scheduled to updated in a future release of the Quartus Prime software. Custom Fields values: ['novalue'] Troubleshooting FB: 517805; False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 18.0 17.1 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']