So, here's some background.
I have a model for calculating air and flue gas enthalpy into and out of gas turbines in both our test area and production AF servers. its does this by a rollup analysis to sum child elements fractional mass (its molecular mass * its vol%). My issue is that this rollup doesn't work in the production environment but it does in the test environment for the outlet flue gas. In production clicking the evaluate button returns the correct value, even backfilling the rollup works and if I refresh the elements view the result returns the correct number (after a backfill) until the analysis runs again - it's set to run every 5 minutes, and then returns to being 'Calc Failed'
Furthermore the inlet air works fine in both AF servers and runs periodically without any error.
here's the elements for the exhaust
and the inlet
and the analysis
does anyone have any ideas