rslinx clasicc lite is required 
 the installation sfotware has detected that you have an old version. 
or no version .of rslinx classic lite installed on your computer .it is 
necessary to install the  current version of rslinx classic lite.to 
install rslinx lite.go to the required steps section .of the rsnetworx 
installon this cd.  
各朋友,這是什么意思,應該怎么處理?