While trying to install LM14 Mate 64bit onto an USB memstick with a primary ntfs partition in the beginning of the drive and a primary ext4 partition filling the rest mounted as “/”, the installer gave an 'exit code 1 when trying to enable home encryption. Hitting retry brought me back to the user page with the encrypt option disabled, re-enabling causes loop. Hitting continue allows setup to resume but the home directory is not encrypted. When install was complete, manual encrypt of home directory was possible and system operated normally.
Several attepts at reinstall caused the same error, installation to HDD with similar partition setup also reproduces the error. Installation with a 'traditional' partition setup does not cause the error.