IS there already a fix for this problem? I've read multiple threads about this and experience the problem myself too. IT doesn't happen when the table is filled with 6 people, but when 1/2/3 seats are empty (because of a small player pool in rush). Sometimes it also happens with 6 players on the table, but when you close HEM and fulltilt and then relaunch HEM and than fulltilt (in that order) it works again, but not when seats are empty.
Hope this might help narrowing down the possible problems
p.s. I did all these steps
Hold'Em Manager 2 FAQs - Poker Software :: How to setup Holdem Manager to run with Full Tilt Rush Tables