Hi Anastasios,

Thank you for reporting this bug. I was able to find and fix it and have updated the installers on the Tracker home page at http://physlets.org/tracker/  Just say yes when it asks if you want to reinstall.

Or follow these steps to avoid reinstalling:

• Download the new tracker-4.94.jar from http://www.cabrillo.edu/~dbrown/tracker/archives/tracker-4.94.jar
• Open the folder containing your existing tracker-4.94.jar and tracker.jar (see Help|Tracker README to locate this folder for your OS)
• Replace the existing tracker-4.94.jar with the new one
• Delete the existing tracker.jar file.
• Make a copy of the tracker-4.94.jar file and rename it tracker.jar

The next time you open Tracker, choose Help|About Tracker and confirm that it is dated 17 Aug 2016.

If by chance this new jar didn't fix the bug, be sure to let me know! :-)

Doug

< Re: Perspective filter problem >

Hi

First of all i have to thank you for this awesome software.

I am using tracker 9.94 and jre 1.8.0_102.

I am using a jpg photo and applying the perspective filter on it.

Everything works fine.

But if i save the project in a .trk file then when i opens the .trk

and go to the perspective filter the only think that i can do is to uncheck the Enabled field.

If i click again the Enabled then crashes the Tracker.

The same crash happen when clicking the Properties field.

Thank you for your time