[openerp-v6.0] AttributeError: 'PoweremailSelectFolder' object has no attribute 'inboxvalue'

[Denis Konchekov]

Error occurs when I try to select IMAP folder in account settings.

Traceback (most recent call last):
  File "/home/kodemi/src/openerp6/server/openerp/osv/osv.py", line 122, in wrapper
    return f(self, dbname, *args, **kwargs)
  File "/home/kodemi/src/openerp6/server/openerp/osv/osv.py", line 176, in execute
    res = self.execute_cr(cr, uid, obj, method, *args, **kw)
  File "/home/kodemi/src/openerp6/server/openerp/osv/osv.py", line 167, in execute_cr
    return getattr(object, method)(cr, uid, *args, **kw)
  File "/home/kodemi/src/openerp6/server/openerp/osv/orm.py", line 981, in default_get
    defaults[f] = self._defaults[f](self, cr, uid, context)
  File "/home/kodemi/src/openerp6/server/openerp/addons/poweremail/poweremail_core.py", line 1181, in <lambda>
    'folder': lambda self, cr, uid, ctx:self.inboxvalue
AttributeError: 'PoweremailSelectFolder' object has no attribute 'inboxvalue'

I avoided the problem by adding definition of inboxvalue = '' before _defaults dict.