Failed to fetch Latest Compailer. Ip file

Facing this issue in Comapact control builder 6.0.0-2 and CHMI 6.0.0-3-2 Build. afte each download the OPC disconnects and Error pop up comes as shown ,for 3 type of files..after finding and select the OPC connnects again..after another download same issue arises. In OPC Logs found this error..if anyone have faced or know solutuon this problem kindly suggest..thanks in advance.