SessionCreator.exe returns Unable to run the test, because neither TestComplete, nor TestExecute was

Hello, 

I'm pretty new to SmartBear Tescomplete. I'm trying to integrate with Gitlab so the test can run automatically. I followed this tutorial: https://support.smartbear.com/testcomplete/docs/working-with/integration/scc/gitlab.html

However, first I wanted to run the command from the machine itself (I also tried it in mine):

C:\Program Files (x86)\SmartBear\TestExecuteLite 15\Bin>  SessionCreator.exe RunTest /UserName:MyUserName /password:MyPassword /UseActiveSession /ProjectPath:"C:\Users\MyUser\Desktop\MyTests.pjs" 

I got the following error:
Unable to run the test, because neither TestComplete, nor TestExecute was found.

Any ideas? 

Thanks in advance