Hey guys, just received a great tip in our support mailbox about a workaround for storing the Pixelmator Pro Extension Documents folder on an external drive and thought I'd share it on the forum for anyone searching for this in the future. The workaround involves moving your entire Pictures folder to the external drive and following these steps:
1) Copy Pictures folder to external drive
2) In Terminal "sudo rm -rd <path to original Pictures folder>"
3) In Terminal "ln -s <path to external drive Pictures folder> <path to original Pictures folder>"
4) Verify, in Terminal, in home directory "ls -al" you should see something like:
"Pictures -> /Volumes/Raid/Pictures" among the listings
5) Restart