SSRS the definition of the report is invalid

Question

How can I resolve the below error message that I receive when I try to deploy my report to our our Reporting Server using BIDS?

Mes

Answer 1

I just received this obscure message when trying to deploy a report from BIDS.

After a little hunting I found a more descriptive error by going into the Preview window.

Answer 2

I found the problem to this... due to a incorrect/failed reference in .rdl to data conns etc. Also found that BIDS wasn't happy about having spaces in some of the project/report filenames... so anyone facing this issue make sure you have no spaces in your naming and check your rdl files, connections, everything for failed/out of date references! Visual Studio seems crap at keeping all of it's references up to date... god forbid you have to rename anything!

Answer 3

A very cryptic message for what my issue was.

I had changed the names of the parameters, but did not update these names in the dataset.

Answer 4

I got this error on a report I copied from another project and changed the data source. I solved it by opening the properties of my dataset, going to the Parameters section, and literally just reselecting all the parameters in the right column, like I just clicked the dropdown and selected the same column. Then I hit preview, and it worked!