I don't know which caused this, the OE or the error above, but the .swa file became corrupted with many lines like this:
-3460.02 -463.31 1 -1.75633e-17 4.86151e-17 1 -0.940505 -0.339779 -8.27181e-24 1.01
-3404.2 -450.788 1 2.51157e-16 -7.36428e-16 1 -0.94647 -0.322791 0 1.18
The OE can still read and display the objects properly, but the TE cannot. In the TE, large blocks of buildings are gone and I figure it's because of these lines.
I can clean the file on my end, but I hope this doesn't keep happening.
EDIT: Geez, these are pitch and roll fields that should be zero. I never touch them!