WaitAliasChild can't find the child when runned first time

I wrote a script that uses WaitAliasChild() in order for my WinForm to load before it accesses a control.

After I restart the Virtual Machine where my TestComplete runs, the test fails. All I have to do is re-run it and it passes every time after that, without me doing anything.

Anyone knows what may be the cause of this?

Forgot to add that if I run the application manualy, after a restart and before I run the test for the first time, the test passes as well.