I have downloaded jaspersoft studio and downloaded successfully one month back. Initially it did not showned up that its 30 days trail version. but, after 25 days, a alert message is showed "5 days left to expire licence." My concern is, jaspersoft studio available free of cost without expiration.
only the Community Edition is available for free, under the EPL license terms.
You can download it from the project page or directly go to the following URL on sourceforge:
If you wish you can use the plugin version for Eclipse, installing it from the dedicated MarketPlace page:
Since the version you are using is showing the warning, I suppose you have downloaded the Beta version of Jaspersoft Studio Professional 5.1.0. Is it correct?
After license expiration the behavior is the same as in iReport Professional. If you try to compile/run/preview a report with Pro components like Fusion Charts/Maps/Widgets or the new HTML5 Charts an blocking error will be raised.
If you already have a valid license, please click on the menu item Help > License Manager in order to install the correct one.
Otherwise you should contact support or who gave you access to the Beta Program.
I hope this helps.