A non-recoverable error or exception has occurred. 0x25

how to find the error or cause of this exceptions !?

A non-recoverable error or exception has occurred.

  Description:   An unrecoverable event has been encountered, such as an exception generated whilst processing a previous exception (Exception with EXCAUSE=0x25).
  General Type:  UnhandledException
  Specific Type: UnrecoverableEvent
  Error PC:      0xffa029e6

we use: BF607 and a lot of interrupts, it seems that used ADI dispatcher is not always return to correct calling function???

Kind regards christoph