I can't open my .ESO file with the designbuilder Results Viewer. When i try to open it, the following error appears: 'Error importing ESO file: In ESO header, an interval type is set to 'whenannualreportvariablesrequested', Timestep, Hourly, Dialy, Monthly or Period only allowed.
I made an input file with OpenStudio and modified some material properties with the IDF Editor.
EnergyPlus 8.9 added an annual reporting frequency (see here for the changelog), and it looks like that is tripping up the viewer. Do you have any outputs set to report at annual frequency? If so and you're running one year (or less), then change those to run period frequency. If you don't have any output variables with annual reporting frequency, you could try editing the ESO file to delete this line in the header:
6,1,Calendar Year of Simulation[] ! When Annual Report Variables Requested
If neither of those work, it may be that modifications in the code of the viewer are needed.
Also check if you have used “Detailed” reporting frequency for any of the requested output variables in the INP file. I’ve seen this error due to that.
All my outputs where set to hourly but there was indeed something with the update which caused the problem. I installed xEsoView and it worked. Thanks for the fast answer!
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