Thank you for posting, please increase available memory using the vmoptions file - instructions below.
By default, PB uses a maximum of 192 MB. This is usually enough but for some operations there may be an issue with running out of heap space.
The example below raised the max to 320 MB, but the number can be higher if needed.
1. Close PB
2. Create a text file and put the following content into it:
Make sure there is a linefeed (Enter) at the of the text. Save this file and name it PersonalBrain.vmoptions in the PB program folder.
To access the PB program folder, go into Program Files\PersonalBrain on Windows. On Mac OS, Ctrl-Click on the PersonalBrain icon and select Show Package Contents then navigate to Contents > Resources > app. (The PersonalBrain.vmoptions file must be in the same location as the file PersonalBrain.jar)
3. Restart PB.