REP-0498: Number of columns selected by the query is incompatible with report...

I keep getting REP-0498: Number of columns selected by the query is incompatible with report definition.

I have changed the backend definition of the materialised view that I am using and re-compiled my report, and saved it. This is not working. I've still not managed to run my report without getting this message.

I even recreated the object in the data models and set up all of the summary CS and CFs again.

Still din't work. I'm so frustrated now.

Please can anyone help?

Cheers.

I have the same problem except that I changed the names of a column in a table. I have tried compiling in 6i and 10g. If have found a solution please help me.

Thanks, rob.