Lock Folder XP is Try Before You Buy software. It is NOT intended to be free or public domain software, which means that you can evaluate the program for a specified amount of time and register it if you think that it will meet your needs or - otherwise, stop using it. In the case with Lock Folder XP, the trail period is set for 30 days (these days do not have to be continuous calendar dates from the date of installation).
The trial version of Lock Folder XP is NOT crippled in any way, nor is there any functionality disabled in the program. This allows you to properly try out the software, so that you know whether this is what you want.
However in the unlicensed copy (trial version) the license screen will always pop up whenever you add new protection object.
Once you purchase the program, you will not get these limitations anymore, and you will also qualify for full technical support and free upgrades. See the order page for more information.
Please read the license agreement regarding Lock Folder XP.