RSV-SRV-0040 error - Internal error

[que1983]

I keep getting internal error message on a report. Usually this error goes away after repeating attempts. not this time the error stays.  Yesterday the report ran just fine.  I tried removing columns but I still get the error.  I am not getting this error with other reports and now major changes were made to the report.  I even ran the previous copy and still get the error

[BigChris]

That's a fairly generic error message, but I've found it usually comes from CASE or IF statements.

[alarina]

For those who are searching for an answer to this topic: this error can be caused by conditional styles!
I created a duplicate of a table, linked that new table to a new slightly modified query (same data elements but different filters) but completely forgot to re-write the conditional style based on one data element. That's what the style kept pointing to a data element from a different query and so it screwed the whole page.

Hopefully this information can save somebody an hour that I lost myself when looking for a solution ;)