Freezing after High Sierra upgrade

Hi Guys,

As per the title - since upgrading from Sierra to High Sierra I've now had 3 occurrences of Indigo completely freezing, requiring a force quit and re-launch before it unfreezes itself.
I've literally just re-installed the latest Indigo 7.1.1 installer, but thought I'd post on here in case it's a known bug?

[matt (support)]

No known freezes. The next time it occurs, unplug your interfaces (PowerLinc, Z-Stick, etc.) from your Mac. Does that unfreeze it? Also check the Event Log folder and look at the most recent log file after a freeze and if there is anything interesting copy/paste it into a reply.