No, it crashes the game every single time. Once I reload, I spawn behind the portal on level 4.You can't walk back through the portal to level 3? This has worked for me every time.
Was this character created before the 0.6.0.1 hotfix? One of the fixes in 0.6.0.1 was:Key here is the game I have passed another key character here that's for sure but I do it or not or it does not work
However, and this is quoted form Bare Mettle on the steam forums:Fixed keys no longer working after taking them to a new map"
So if you character was created before 0.6.0.1 the key could be buggedThe key issue should be fixed in 0.6.0.1, however it's not retroactive so if your keys were already broken there's nothing that can be done to fix them."
If it was created before 0.6.0.1, I don't think it can be fixed. As quoted above:How to fix it
This happened with a couple of my keys as well. A bit frustrating, but to be expected while the game is still in development.(...) if your keys were already broken there's nothing that can be done to fix them.