We found a bug on the latest version of our update for the Unabridged Dictionary and Thesaurus (English/Spanish) Apps.
The nature of the problem is shown when attempting to open up the App a second time. The bug will crash the program during loading screen, rendering it "locked" thereon.
We've already submitted an additional update to Apple which would debug the Apps instantly and for good. This however may take days in the process.
In the meantime, we recommend our customers do the following:
-Uninstall App with problem.
-Start Application a First time
-Once finding no need for it, please put on background/minimize it. Don't close it.
This will guarantee you continued use of App while our Update is released.
If you have any further questions don't hesitate to let us know.