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I got this error

Users Conversion
Users Conversion Complete
Users Converted 53

Forum Structure Conversion
Structures Converted 0
Errors

Forum Structure Conversion Failed
Conversion Stoped due to failure above

Page created in 0.05845 seconds
Total SQL execution time 0.05105 seconds
Average SQL execution time 112 seconds
SQL queries: 0.00046

Added 21 seconds later:

I also can't log in with my original password and stuff.