Got it. Now it works without any problem. I got one question. Is there a possibility to sort the movies in a collection by production date and not name?
Production date? I don't have that field, but I do have "Date (release)". I have always wanted to sort my collection by that so here's how I accomplished it.
Open Options-->Theater View and then select Collections.
Next, click on "Set rules for file display..." and select 'Sort by' and then add the 'Date (release)' field, sorted a-z.
Now items in the Collection are sorted.