May 14, 2014
I noticed that many browsers had cached a part of the older version and were trying to mix the cached part with the code from the new version. This will obviously result in problems as there are a significant number of differences between version 2.6 and 3.0.
If you have experienced any issues with version 3.0, then please try clearing your browser cache first. You can clear browser history for a specific website in most browsers.
I have turned off browser caching for future sessions in the version 3.1 (just released). This will prevent issues in the future, but it will not help if you have a cache already.
Sorry about the inconvenience. I am hoping that this will not be required for future releases (3.1+).
April 27, 2014
Here's the link to try out version 3.0: http://arohatgi.info/WebPlotDigitizer/beta.
This will be kept as a "beta" for a couple of weeks just to make sure there aren't any issues that I might have overlooked. Also, this gives me some time to put together a few tutorials and update the user manual etc. Checkout the demo video in the previous post - it should help in getting started.
Feedback is highly appreciated!