Crash during attempted dump of repository

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I was trying to upgrade and dump my repository with these results:

C:\Users\Mike>svnadmin recover C:/Opt/var/svn_repository/
Repository lock acquired.
Please wait; recovering the repository may take some time...
This application has halted due to an unexpected error.
A crash report and minidump file were saved to disk, you can find them
here:
C:\Users\Mike\AppData\Local\Temp\svn-crash-log20110326235206.log
C:\Users\Mike\AppData\Local\Temp\svn-crash-log20110326235206.dmp
Please send the log file to users_at_subversion.apache.org to help us analyse
and solve this problem.

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C:\Users\Mike>svnadmin dump C:/Opt/var/svn_repository/
This application has halted due to an unexpected error.
A crash report and minidump file were saved to disk, you can find them
here:
C:\Users\Mike\AppData\Local\Temp\svn-crash-log20110326235410.log
C:\Users\Mike\AppData\Local\Temp\svn-crash-log20110326235410.dmp
Please send the log file to users_at_subversion.apache.org to help us analyse
and solve this problem.

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I've attached the log and dmp files.

Thank you for your assistance.

Mike Adams
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