Upgrade from 4.3 to 5.0 schema auto-update failed

We are on Ubuntu 14.04 and using postgresql 9.2 going to 9.3. On the new database I deleted the alf_bootstrap_lock table to try and get around the errors. This is the new error I m getting now:

2015-09-17 08:42:04,104 ERROR [domain.schema.SchemaBootstrap] [localhost-startStop-1] Schema auto-update failed
org.postgresql.util.PSQLException: ERROR: column "category_" of relation "act_ru_task" already exists

I also see this error next:

2015-09-17 08:42:04,108 ERROR [web.context.ContextLoader] [localhost-startStop-1] Context initialization failed
org.alfresco.error.AlfrescoRuntimeException: 08170000 Schema auto-update failed

Ideas on what I need to do to get the schema updates to work?

Thank you,
Eric Speake