ERROR in EDI 11.1 Import design

Dear Friends,

i have a problem in enounter11.1 RTL to GDS ii tool,

now i apply the input files in the IMPORT DESIGN tab netlist.v file and all.lef and power and ground nets vdd and vss. select top level entity :auto assign   then i click ok , the tool show the following error, ERROR (ENCSYT-6729) : can't read "vlEmsHandled": no such variable (this error in the GUI window at the same time the terminal shows the following error

ERROR:(ENCSYC-560) : can not determine top level cell) .  

anyone please help me for the above errors.