In reply to griffen:
Been to Paklenica twice and each time took 60m single ropes for both single and multi-pitch, and had no regrets. Plenty to do, maybe there are some specific routes that would benefit from longer ropes but we didn't come across any.
There have been a few threads on here in the past about gear for Paklenica - worth a search of the older forums to see what others have said.
Hope this helps
Dave