Redmine

I've discovered that the mantis importer is failing on this line, thus in my install it only imports 32 out of over
1000 bugs from my mantis database:

i.assigned_to = User.find_by_id(users_map[bug.handler_id]) if bug.handler_id &&
users_map[bug.handler_id]

The error is as follows:

rake aborted!
can't convert Symbol into String
/opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/validations.rb:135:in `+'
/opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/validations.rb:135:in `full_messages'
/opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/validations.rb:129:in `each'
/opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/validations.rb:129:in `full_messages'
/opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/validations.rb:128:in `each_key'
/opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/validations.rb:128:in `full_messages'
/opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/validations.rb:13:in `initialize'
/opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/validations.rb:764:in `new'
/opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/validations.rb:764:in
`save_without_transactions!'
/opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/transactions.rb:133:in `save!'
/opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/connection_adapters/abstract/database_statements
.rb:59:in `transaction'
/opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/transactions.rb:95:in `transaction'
/opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/transactions.rb:121:in `transaction'
/opt/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/transactions.rb:133:in `save!'
/Users/dmckenna/Sites/redmine/config/../lib/tasks/migrate_from_mantis.rake:320:in `migrate'
/Users/dmckenna/Sites/redmine/config/../lib/tasks/migrate_from_mantis.rake:303:in `each'
/Users/dmckenna/Sites/redmine/config/../lib/tasks/migrate_from_mantis.rake:303:in `migrate'
/Users/dmckenna/Sites/redmine/config/../lib/tasks/migrate_from_mantis.rake:492
/opt/local/lib/ruby/gems/1.8/gems/rake-0.7.3/lib/rake.rb:392:in `call'
/opt/local/lib/ruby/gems/1.8/gems/rake-0.7.3/lib/rake.rb:392:in `execute'
/opt/local/lib/ruby/gems/1.8/gems/rake-0.7.3/lib/rake.rb:392:in `each'
/opt/local/lib/ruby/gems/1.8/gems/rake-0.7.3/lib/rake.rb:392:in `execute'
/opt/local/lib/ruby/gems/1.8/gems/rake-0.7.3/lib/rake.rb:362:in `invoke'
/opt/local/lib/ruby/gems/1.8/gems/rake-0.7.3/lib/rake.rb:355:in `synchronize'
/opt/local/lib/ruby/gems/1.8/gems/rake-0.7.3/lib/rake.rb:355:in `invoke'
/opt/local/lib/ruby/gems/1.8/gems/rake-0.7.3/lib/rake.rb:1739:in `top_level'
/opt/local/lib/ruby/gems/1.8/gems/rake-0.7.3/lib/rake.rb:1739:in `each'
/opt/local/lib/ruby/gems/1.8/gems/rake-0.7.3/lib/rake.rb:1739:in `top_level'
/opt/local/lib/ruby/gems/1.8/gems/rake-0.7.3/lib/rake.rb:1761:in `standard_exception_handling'
/opt/local/lib/ruby/gems/1.8/gems/rake-0.7.3/lib/rake.rb:1733:in `top_level'
/opt/local/lib/ruby/gems/1.8/gems/rake-0.7.3/lib/rake.rb:1711:in `run'
/opt/local/lib/ruby/gems/1.8/gems/rake-0.7.3/lib/rake.rb:1761:in `standard_exception_handling'
/opt/local/lib/ruby/gems/1.8/gems/rake-0.7.3/lib/rake.rb:1708:in `run'
/opt/local/lib/ruby/gems/1.8/gems/rake-0.7.3/bin/rake:7
/opt/local/bin/rake:16:in `load'
/opt/local/bin/rake:16

Please note that the line numbers may be different as I've been tweaking the code to debug this problem.

Is there anything else I can do to help debug the problem?

Thanks.