Why does the Quartus II software freeze when I highlight a number in the Text Editor? - Why does the Quartus II software freeze when I highlight a number in the Text Editor? Description Due to a problem in the Quartus® II software versions 12.0 and later, the Quartus II software may freeze when highlighting a number at the end of a string if you highlight from left to right. Resolution To work around this problem, highlight from right to left or use a different text editor. This problem is fixed beginning with the Quartus II software version 12.1. Related Articles Why does the Quartus II Text Editor freeze when highlighting a number? Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['FPGA Dev Tools Quartus II Software'] 12.1 12.0 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']