Version: 1.4.10.0
Took me a while to figure out why fspackagebuilder stalled upon converting a file that had the following content (duplicated vertices) somewhere hidden in there:
<?xml version="1.0"?>
<FSData version="9.0">
<Polygon version="0.4.0" displayName="Biomes-Semi-Tropical" altitude="0">
<Attribute name="UniqueGUID" guid="{89e89b28-692e-4771-8493-ad5ec213d374}" type="GUID" value="{ac21467a-fea2-4dfa-9737-dcba5af24564}"/>
<Attribute name="VegetationScale" guid="{6A043F59-E6F2-4117-A2E4-D510E7317C29}" type="UINT32" value="209"/>
<Attribute name="VegetationDensity" guid="{41EFF715-C392-4B31-A457-50A504353A90}" type="UINT32" value="31"/>
<Attribute name="VegetationFalloff" guid="{E82ABE17-FB4C-4F67-A28C-ED41969AEAD6}" type="FLOAT32" value="47.310001"/>
<Attribute name="BiomeName" guid="{E5FA1B20-BB2F-40D5-913B-480C547CC9B8}" type="STRING" value="Semi-Tropical"/>
<Vertex lon="-40" lat="40"/>
<Vertex lon="-40" lat="40"/>
<Vertex lon="-40" lat="40"/>
<Vertex lon="-40" lat="40"/>
</Polygon>
</FSData>
Just a very small problem but among the otherwise very good error reporting capabilities it would be good to know which line is corrupted. Currently when running a huge file with something like this in there flightsimulator.exe just exits without an error.