编译的时候总会出现警告：
Warning: FLEXlm software error: Future license file format or misspelling in license file  The file was issued for a later version of FLEXlm than this  program understands. Feature:       quartus License path:  C:\Documents and Settings\XiaoDong Wang\altera_tum.dat FLEXlm error:  -90,313 For further information, refer to the FLEXlm End User Manual, available at "www.macrovision.com".
Error: Current license file does not support the EP1C6Q240C8 device

不知道是为什么? 求教!