Identify the Fact table and specific Dimension table where the error is occurring.
1st Solution
Once identified delete the physical and BMM logical joins from the dimension to fact table.
Recreate the physical and BMM Logical joins .
Save and Test
2nd Solution
In the Dimension table on the BMM Layer goto the Sources of the table . Double click a Source and check the content tab. Remove any where conditions or Fragmentation content or combination flag.
Then upload rpd and test again.
The above solutions can be done offline or online via Administration tool.
I will update my toolset to 11.1.1.6.8 and patch up OBIEE aswell to see how i get on.