IBU calculation does not function for 3 gallon batch size

I'm using BeerSmith 2.2 on Windows 7. This also seems to happen on the Android app. I created a new recipe with a batch size of 5 gallons. Everything seemed normal, all calculations adding up. I am doing an experimental batch, so I am going to make 3 gallons, so I scaled the recipe down.

When I did this, the amount of hops in the recipe shot up to over 70,000 ounces, but the IBUs stayed the same.  When I tried creating a new 3-gallon recipe from scratch, any hop additions I made had no effect on IBU. It was always 0 (zero). Judging from how the scaled-down recipe went, I think if I adjusted the hops to some huge number then the IBU calculation would move.

It seems that there is a decimal in the wrong place for 3-gallon IBU calculations.

Can you post the recipe.bsm so that we can see what is going on?  I have never run across this and I scale recipes all the time from 8L to 10L to 20L to 30L. 

I would guess that when you scaled the recipe down you may have not scaled the entire equipment profile.  This could result in odd things like a zero (or near zero) boil volume which could send the IBU calculations crazy.

Review both the original equipment profile and the volumes in the one you are scaling to - to make sure the volumes are all good.

Brad

BeerSmith said:

I would guess that when you scaled the recipe down you may have not scaled the entire equipment profile.  This could result in odd things like a zero (or near zero) boil volume which could send the IBU calculations crazy.

Review both the original equipment profile and the volumes in the one you are scaling to - to make sure the volumes are all good.

Brad

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This was my problem. Thank you very much for helping out a noob!