First: Advertising always lies. Doesn’t matter who makes it. Never trust it, always verify it yourself.
Second: Every product I’ve ever used has had failing bugs. Doesn’t matter if it’s pay-for tools like Microsoft Visual Studio, Autodesk 3ds Max, Microsoft Windows, and Adobe Photoshop, or free tools like Linux, Apache, MySQL and GCC.
All these products are complex, and thus have bugs. Living with those bugs, and debugging and working around those bugs, are a necessary price to pay when using those tools.
The good news is that, even if it takes you two days to debug and work around the packaging bug, you’re still ahead compared to if you had to build your own game engine!
I see one situation where this can be extra bad, though: If you don’t have access to the skills needed to debug the engine/tools themselves. That is, if you’re generally a “user” who don’t actually have the ability to dive in and troubleshoot, then each bug becomes a potential product killer. If you’re in that situation, I highly recommend making some friends who have those skills, so you can own your own destiny.
Anyway, if you want someone on the forum to help with the packaging, diving into the build logs and copy/pasting the bits of the log that shows what it is that’s failing, will likely help you get an answer faster.
Good luck on the project!