Hi, 

I'm trying to upgrade a sqlite database from database_Version = '21' and 
I'm getting the following error when executing *trac-admin myproject 
upgrade* command: 

*The upgrade failed. Please fix the issue and try again.*

*OperationalError: table cache already exists*

Agilo log file shows the following error:
2014-09-25 00:02:16,825 Trac[console] ERROR: Exception in trac-admin 
command: 
Traceback (most recent call last):
  File "D:\Python27\lib\site-packages\trac\admin\console.py", line 109, in 
onecmd
    rv = cmd.Cmd.onecmd(self, line) or 0
  File "D:\Python27\lib\cmd.py", line 220, in onecmd
    return self.default(line)
  File "D:\Python27\lib\site-packages\trac\admin\console.py", line 285, in 
default
    return cmd_mgr.execute_command(*args)
  File "D:\Python27\lib\site-packages\trac\admin\api.py", line 124, in 
execute_command
    return f(*fargs)
  File "D:\Python27\lib\site-packages\trac\env.py", line 982, in _do_upgrade
    self.env.upgrade(backup=no_backup is None)
  File "D:\Python27\lib\site-packages\trac\env.py", line 713, in upgrade
    participant.upgrade_environment(db)
  File "D:\Python27\lib\site-packages\trac\env.py", line 780, in 
upgrade_environment
    script.do_upgrade(self.env, i, cursor)
  File "D:\Python27\lib\site-packages\trac\upgrades\db22.py", line 11, in 
do_upgrade
    cursor.execute(stmt)
  File "D:\Python27\lib\site-packages\trac\db\util.py", line 66, in execute
    return self.cursor.execute(sql)
  File "D:\Python27\lib\site-packages\trac\db\sqlite_backend.py", line 78, 
in execute
    result = PyFormatCursor.execute(self, *args)
  File "D:\Python27\lib\site-packages\trac\db\sqlite_backend.py", line 56, 
in execute
    args or [])
  File "D:\Python27\lib\site-packages\trac\db\sqlite_backend.py", line 48, 
in _rollback_on_error
    return function(self, *args, **kwargs)
*OperationalError: table cache already exists*

*NOTE:* The database I'm trying to upgrade is the database delivered with 
Agilo Pro 1.3.13 in the test environment. 

The releases used in my environment are: 
Agilo PRO 1.3.13
Trac 1.0.1 
Python 2.7.8
setuptools 5.4.1
pysqlite 2.6.0
sqlite database library 3.8.7
Windows 7

Any advice ? 

Thanks in advance, 

Ricard. 


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