Hey everynone, it worked!!!
I have been meaning to reply since a long time, but for the last 15 hours or so i had no internet!!
Really appreciate it.
And thank you to everyone else too who tried to help!!
The solution is not to drag from the main window to the blueprint window, but to use the add component button.Although the previous method worked for me before, i won’t waste more time on it.
Atleast until i have some more idea about child components.