Quote from Bjorn
"In 0.98.27b:
-
Dissolve could create two-edge faces, which would immediately cause
a crash. (Problem reported by PC.) -
Eliminated crash in the color chooser. (Problem reported by GetaVe.)
-
Extract Region could crash if used on an object with hidden faces.
(Problem reported by yst.) -
Fixed an import bug reported by SoulVector.
-
The Select|Edge Loop command no longer selects virtual mirror edges.
(Problem reported by Fonte Boa.) -
Collapsing several edges could cause a crash (an old bug).
In 0.98.27a:
-
If objects were combined and an entire sub-object was hidden, there
would be a crash in smooth shading mode. (Problem reported by PC.) -
Attempting to collapse a hard edge would cause a crash.
Weld could also crash if there were hard edges.
(Problem reported by GetaVe and yst.) -
Some minor performance improvements."