what is the log,and how did you trap the report ? I am not sure what you want to accomplish,can you descibe more detail?
thx isabella. the log is Program Files\Microsoft SQL Server\MSRS12.MSSQLSERVER\Reporting Services\LogFiles where presumably some error would be posted the same time this happens. since our logs stick around for 30 days, we have 30 days to "trap" or see the error. once 30 days passes, we dont have a clue and we have to wait till the next time it happens.
assume you have a chart region hover over that reads "this chart represents year over year sales comparisons for the last 10 years". But instead of your chart's bars rendering in that region, your hover over message renders in that region as if its a textbox. that's what is happening to us on occasion. what we want to accomplish is to determine why. once we determine why (under what conditions is that even possible), maybe we can come up with a solution.