After patchset 6 upgrade reports are failing
We have upgraded from 11grel1(11.1.1.3) to 11grel1(11.1.1.7), after that the reports are failing with the below error, I checked in support and they suggested to set variable REPORTS_OUTPUTIMAGEFORMAT=gif, but I just want to know whats the reason of the error as the same reports are working fine before upgrade.
FYI...
The report terminated with error:
REP-536870981: Internal error writing the image BandCombine: a row of the matrix does not have the correct number of entries, should be OpImage.getExpandedNumBands(source0.getSampleModel(), source0.getColorModel()) + 1. REP-50125: An internal exception occurred: java.lang.NullPointerException. REP-0002: Unable to retrieve a string from the Report Builder message file. REP-536870981: .