I'm struggling with a weird problem, but I'm not sure whether it's a bug or something in my computer causing it. Win Toolkit 1.4.33.7 running on Windows 7 x64 sp1. When trying to add updates with All-In-One Integrator, I can always add exactly one update. When trying to add another one, I always get this error: Those updates can be any updates there are in any order, it doesn't matter. The first one is always accepted without a hitch, then the error pops up after the second one. It's a real mystery and I cannot for my life figure out what's causing this. The error message could as well be