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java.lang.NullPointerException
	at beast.evolution.tree.coalescent.GMRFSkyrideLikelihood.getCorrectFieldLength(Unknown Source)
	at beast.evolution.tree.coalescent.GMRFSkyrideLikelihood.initAndValidate(Unknown Source)
	at beast.util.XMLParser.initBEASTObjects(Unknown Source)
	at beast.util.XMLParser.parse(Unknown Source)
	at beast.util.XMLParser.parseFile(Unknown Source)
	at beast.app.BeastMCMC.parseArgs(Unknown Source)
	at beast.app.beastapp.BeastMain.main(Unknown Source)

Error 110 parsing the xml input file

validate and intialize error: null

Error detected about here:
  <beast>
      <run id='mcmc' spec='MCMC'>
          <distribution id='posterior' spec='util.CompoundDistribution'>
              <distribution id='prior' spec='util.CompoundDistribution'>
                  <distribution id='skyride' spec='beast.evolution.tree.coalescent.GMRFSkyrideLikelihood'>

Warning: removing transform class beast.base.inference.operator.kernel.Transform$LogConstrainedSumTransform because it should have at least 2 dimensions but it has 0
Turning on scaling to prevent numeric instability 1.0201
…
0	NaN
1	NaN
2	NaN
3	NaN
4	NaN
java.lang.Error: randomChoiceUnnormalized falls through -- negative components in input distribution?
Please report error to Marc

Error 1017 parsing the xml input file

Class could not be found. Did you mean beast.base.inference.MCMC?
Perhaps a package required for this class is not installed?

Error detected about here:
  <beast>
      <run id='mcmc' spec='MCMC'>

What steps will reproduce the problem?
1. Run a discrete trait analysis

What is the expected output? What do you see instead?

Expect that the log file will contain samples from the posterior for geographic 
transition rates.  Instead, the log file contains the rate and indicator 
variables used by BSSVS, and an additional step is required to transform this 
into the rate posteriors.

It's probably dangerous to expose users to the BSSVS rate and indicator 
variables, as this makes it possible for users to treat the BSSVS rate variable 
as the actual transition rate - which it is not.

What version of the product are you using? On what operating system?
BEAST_CLASSIC v1.1.8 on GNu/Linux.

Please provide any additional information below.