Created Unassigned: PAL crashes by "GetUpperBound" [25861]

I was analyzing a log file from a Win2008 R2 x64 Mobile Server. I've used the usual system.overview profile. I've checked "process all counters of the counter log". It ran to 6% and then crashes:
----------------------
Method invocation failed because [System.Double] doesn't contain a method
named 'GetUpperBound'.
At C:\Program Files\PAL\PAL\PAL.ps1:3470 char:73
+ $Trend = $(ConvertToDataType -ValueAsDouble
$alQuantizedTrendValues[$($alQuant ...
+
~~~~~~~~
+ CategoryInfo : InvalidOperation: (:) [], ParentContainsErrorRec
ordException
+ FullyQualifiedErrorId : MethodNotFound
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I can post the .blg file if needed. It has a size around 24 MB..