Garmin Upload error

Webpage error details

User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; Tablet PC 2.0; Creative AutoUpdate v1.40.01)
Timestamp: Tue, 28 Sep 2010 03:54:09 UTC

Message: <?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<ErrorReport xmlns="http://www.garmin.com/xmlschemas/ApplicationErrors/v1">

  <Error>
    <Exception>
      <SourceCodeLocation>
        <SourceFileName>WEB_DEVICEMANAGER.CPP</SourceFileName>
        <SourceFileLine>1246</SourceFileLine>
      </SourceCodeLocation>
      <Extra>ReadFitnessData Unknown Exception</Extra>
    </Exception>
    <Application>
      <Name>Garmin Communicator Plug-In</Name>
      <Build>
        <Version>
          <VersionMajor>2</VersionMajor>
          <VersionMinor>9</VersionMinor>
          <BuildMajor>2</BuildMajor>
          <BuildMinor>0</BuildMinor>
        </Version>
        <Type>Release</Type>
        <Time>Mar 26 2010, 09:00:16</Time>
        <Builder>sqa</Builder>
      </Build>
      <LanguageID>1033</LanguageID>
      <PartNumber>006-A0160-00</PartNumber>
    </Application>
    <Computer>
      <OperatingSystem>WIN32 Windows Platform, Major Version: 6, Minor Version: 1 </OperatingSystem>
      <Processor>x86, Processor Level: 6, Processors:2, Model: 15 Stepping: 11</Processor>
      <RamSize>3406968</RamSize>
    </Computer>
    <Time>2010-09-28T03:53:27Z</Time>
  </Error>

</ErrorReport>

Line: 330
Char: 5
Code: 0
URI: http://www.beginnertriathlete.com/discussion/jscripts/garmin/device/GarminDevicePlugin.js

 
60k bike ride, spanning many hours (to and from work with no reset in between). Uploads from device correct but never displays available workouts. All other recent entries have been good.