error in getTotalRows

[senordhuff]

We saw the following error today with 6.5.1. Any idea what might have caused this?

"this.data.getLength() is not a function"

from getTotalRows:

,isc.A.getTotalRows=function(){if(this.data==null)return 0;var _1=this.data.getLength(),_2=this.$34e();if(_2!=null&&_2+1>_1)_1=_2+1;if(this.showNewRecordRow)_1+=1;return _1}

[Isomorphic]

This suggests that "data" has somehow been set to something other than an Array or ResultSet, which might indicate a bad call to setData() or a direct assignment.