I have no clue why infinite movers seems to not work anymore. When I was testing it, it worked pretty well. Everything was normal. One thing I noticed, was if you had the return time set to -1000, it would crash the server, with or without the #INF. Without the mod, a return time of -1000 will make it 'pop' back to the start. I tried to fix this, by telling it to return to the start if the return time is less than -1000. I have no clue why it isn't working, but I'll keep looking in to it. See a fix soon, 'cause my servers movers are just as bad. If you want to uninstall the mod for right now, grab a fresh copy of RtB and put the old movers.cs into your current RtB.
EDIT: I think its fixed in v2.5. Once again, tests went smoothly, but I dunno if its going to suddenly not work again.