cannot concatenate 'str' and 'list'

hello

when trying to build a stage i get this error:

Building natively for x86
Traceback (most recent call last):
  File "/usr/bin/catalyst", line 296, in ?
    build_target(addlargs, targetmap)
  File "/usr/bin/catalyst", line 168, in build_target
    mytarget=targetmap[addlargs["target"]](conf_values, addlargs)
  File "/usr/lib/catalyst/modules/stage3_target.py", line 16, in __init__
    generic_stage_target.__init__(self,spec,addlargs)
  File "/usr/lib/catalyst/modules/generic_stage_target.py", line 109, in 
__init__
    self.set_source_path()
  File "/usr/lib/catalyst/modules/generic_stage_target.py", line 159, in 
set_source_path
    
self.settings["source_path"]=self.settings["storedir"]+"/builds/"+self.settings["source_subpath"]+".tar.bz2"
TypeError: cannot concatenate 'str' and 'list' objects

building snapshots works though.



thx   jonas