Crash on sorting Match %

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Application Identifier: com.hardcoded_software.dupeguru_pe
Application Version: 1.11.0

Traceback (most recent call last):
File "core/app_cocoa_inter.pyc", line 205, in sortBy_ascending_
File "core/gui/result_table.pyc", line 112, in sort
File "core/results.pyc", line 312, in sort_dupes
File "core/results.pyc", line 312, in
File "core_pe/data.pyc", line 64, in GetDupeSortKey
TypeError: unsupported operand type(s) for -=: 'str' and 'str'
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1. Turn power marker on
2. Turn delta values on
3. Sort by Match %

Crash!

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(from [b202bc89d727]) [#108 state:fixed] Fixed column mess after the earlier removal of the ctime col.
http://bitbucket.org/hsoft/dupeguru/changeset/b202bc89d727/