error in saturation dynamic block

Hi,

I am designing a pi controller for charging li ion batteries.I am trying to control the charging current and I am using saturation dynamic block in order to make the charging current within defined limits.As I try to run the simulink model ith gives me the following error.

Error in 'libms_main/LiBMS_TopLevel/LiBMS_Emulator/LiBMS/Current Control/Limit I_Bat to I_request/Saturation Dynamic/Data Type Duplicate': This proxy block was inserted in the model because a block of type 'DataTypeDuplicate' could not be located during model load. Updating or simulating a model containing such a proxy block is not permitted

As I remove this block I get a wrong charging current response. Anybody have any idea how to overcome this error would be great.

Thanks Waqas