Cambridge Advanced Learners Dictionary 3rd edition

I,m using Cambridge Advanced Learner’s Dictionary 3^rd edition. But some times I can’t search the meanings of words when I type at the searching place. Always It shows only “A” as the starting place, not the typed word by me at that particular moment. But when I uninstalled & reinstalled it the problem is over. But now every time I’ve to uninstall & reinstall to make it works which makes me bother always. Also I’m using KAV 7.0 . Would you pl help me. Thank You in Advance