Hi James,

Thanks for reaching out!

We've implemented a much better way of managing that data in recent versions. It's called FlexStorage and it stores data files by day or month, instead of one lumped sessions.ppdata file. If you're interested in updating, I would recommend exporting your target list for extra security.

It looks like you've been updating your maintenance pretty regularly, great job! To take advantage of the FlexStorage feature, you can click Help > Check for Updates or, you can use the link below:

http://www.pingplotter.com/download

After updating, the next step is to migrate your old data. Head into Edit > Options > Auto-Save Data and click the Start Migration button in the bottom right corner.

*Please note, migrating a file of this size can take quite a while.*

If you encounter any difficulties with this, please send us a support ticket via the PingPlotter application in Help > Email PingPlotter Support, and we'll get in touch!

All the best,
-Austin