[Dune] 3D-UGGrid-Parallel-Adaptivity

[Carlos Cueto Camejo]

Dear Dune developers,

I'm working in a project where I use adaptivity with UGGrid as grid  
type in a 3D model. Dune and UGGrid are built in parallel and  
everthing works well if I run the programm with just one processor.  
Then, if I run the programm with 2 or more processors, once I call  
grid.adapt() I get the following error

DDD [002] ERROR 03902: Identify: 8 identified objects from proc 0, expected 20
cleftdyn_deter: ident.c:1221: UG::D3::DDD_RET  
UG::D3::DDD_IdentifyEnd(): Assertion `0' failed.
[zenon:08707] *** Process received signal ***
[zenon:08707] Signal: Aborted (6)
[zenon:08707] Signal code:  (-6)
[zenon:08707] [ 0] /lib64/libpthread.so.0(+0xf1f0)[0x7feafaa751f0]

Can someone tell me, why does it happen? I believed that UGGrid can  
deal with adaptivity in 3D.

Best regards,
Carlos.