REPORTING SERVICES ERROR: "Index was outside the bounds of the array"


Since today, when I try to execute a report, sometimes I have this error message :
"Error inesperado al procesar los informes. (rsInternalError) Index was outside the bounds of the array. "

It occurs not always. It's like a random error. It was running ok until now. It happen with all the reports.

Could you help me with this problem?

Can you give an insight on the design?
Have you checked where exactly in the report this error occurred (eg. Parameters, Static Values etc)?

I've restarted the services and now is working ok. It seems like there was some kind of issue with the cache.

Thank you.

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