Dhruv, The ciwMenuInit() is a red herring I believe, as for me having that in my .vdsinit gives the error in the expression log but does not trigger an eval err. It's probably caused by having your .vdsinit and .cdsinit either linked together or one loading the other, which is not the intended usage - however, I don't think that's your problem. I can't reproduce the problem with ISR27, even if I turn off saving of the oppoint outputs (if I do that, I only get eval error on the OS() outputs). I would suggest you contact customer support (submit a case after logging in). Andrew
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