Windows 10 with TestComplete 10.60

Hi,

I am running my Testcomplete scripts (jscripts) on platform win 10. It shows project execution but nothing goes on, it stuck on 1st script. My first step in the script is USEUNIT method (is this causing problem?).

I dont know actual cause. Is USEUNIT not supported on Win 10 platform with TC 10.60 or there is another possbility? 

Also when I try to stop project execution, it does not stops and I have to kill TC exe.

What should I do? Cannot upgrade to TC 11 as support and maintenance period expired.

Thanks in Advance.