Thank you for your replies ronburgundy.
My suggestion would be to add a window that pops up the first time you run oQueue after each update, telling the user to disable auto accept in whatever UI addon they're using, because it might cause a conflict. Or maybe some small piece of text in a corner somewhere in the main window?

Invited players are removed instantly

I know this has been posted before and happened to others, but I just wanted to add this topic so it gets some more attention and hopefully a fix.
First of all, other than oQueue I'm using the following addons:
NPCScan, Auctionator, Bagnon, Deadly Boss Mods, GatherMate2, HotLoot, Overachiever, PallyPowerWarn, PetTracker, Postal, RareCoordinator, Routes, Skada, SuperGuildInvite, TomTom.

What happens is that whenever I create a premade in oQueue and people start showing up in the waiting list, I start inviting them and while all are sent invites and put in the party, some get instantly kicked after joining me, often listing themselves again in the waiting list and if I invite them again the same thing happens.

This happens no matter if I've been in a dungeon/raid/premade before doing this or not. The same thing happened to another raid leader I joined through oQueue the other night. Some people were instakicked after joining, just like what happened to me.

Since this is an issue that affects many of us you gotta find a way to fix it. I don't use any UI mods that would screw up invites or anything so it is obvious that it must be an error in oQueue's invite system.

By the way, I also want to include another suggestion/question: During an ongoing raid, if listing the party as a premade in oQueue it lists all members as dps, how come? Can it be fixed?