Dear Pavan,
Solved it :-) For anyone who finds this post while searching for the solution
1) extract ova file using 7zip or winrar ( i used winrar). There will be 3 files. .mf, .vmdk and .ovf
2) Open .ovf file in notepad, and search for line that is giving the error. My error was regarding "vmx-13" so i searched for "vmx-13"
3) change "vmx-13" to "vmx-10"
4) save the file
5) delete the .mf file
6) Import the ovf file now, it will work!
I am doing this for PoC only. Cannot recommend above steps for production.