XML Block Import format

Hello, 

I am having some trouble importing a block into Context Capture. I have stripped back the block to include only the information and I have and deleted all the lines which have 'optional' listed before them. The error message I am receiving is shown below, line 112 being the last line of the XML script. 

The XML block I am using looks like this (I've zeroed the translations, rotations and distortions and only included 1 image in 1 photogroup for simplification)

<SpatialReferenceSystems>
<SRS>
<Id>0</Id>
<Name>ENU</Name>
<Definition>WGS84</Definition>
</SRS>
</SpatialReferenceSystems>
<BaseImagePath>C:/Images</BaseImagePath>
<Block>
<Name>Block1</Name>
<Description>Camera1</Description>
<Type>Aerial</Type>
<SRSId>0</SRSId>
<Photogroups>
<Photogroup>
<Name>Group1</Name>
<ImageDimensions>
<Width>5472</Width>
<Height>3648</Height>
</ImageDimensions>
<CameraModelBand>Visible</CameraModelBand>
<PixelSize>0.00654</PixelSize>
<SensorSize>35.8</SensorSize>
<FocalLength>105</FocalLength>
<CameraOrientation>XRightYDown</CameraOrientation>
<PrincipalPoint>
<x>0</x>
<y>0</y>
</PrincipalPoint>
<Distortion>
<K1>0</K1>
<K2>0</K2>
<K3>0</K3>
<P1>0</P1>
<P2>0</P2>
</Distortion>
<Photo>
<Id>1</Id>
<ImagePath>IMAGE1.jpg</ImagePath>
<Pose>
<Rotation>
<M_00>0</M_00>
<M_01>0</M_01>
<M_02>0</M_02>
<M_10>0</M_10>
<M_11>0</M_11>
<M_12>0</M_12>
<M_20>0</M_20>
<M_21>0</M_21>
<M_22>0</M_22>
</Rotation>
<Center>
<x>0</x>
<y>0</y>
<z>0</z>
</Center>
</Pose>
</Photo>
...
</Photogroup>
<Photogroup>
</Photogroups>
</Block>
</BlocksExchange>

Has anyone else experienced this problem and knows how to fix it?