WORKAROUND:
When you get to version 169 and failed, drop all the indexes of CSSPCMNT. Here is how to do it:
1. Open SQLPlus
2. Execute this SQL: select index_name from user_indexes where table_name = 'CSSPCMNT'
3. It should show all the indexes
4. Take all the names and drop them with the command "drop index XYZ" where "XYZ" is an index name
5. Continue the database upgrade
STATUS:
This issue has been fixed in version 13.0 and higher. The latest version of Statistica can be downloaded here.