Seems like a lot of things could cause that.

Not sure what it could be myself, but this was suggested for this error on another forum:

1) Check all qualifiers (all owners and tables and columns are valid)
2) Check that all derived tables has a name
3) All columns in a derived table has a name



in that example, the problem ended up being a case-sensitive issue
he had RescAddon but it should have been RescAddOn


... hope that helps