All transport having negative environmental impact in contribution analysis after reinstalling openLCA

Question

Hi,

I reinstalled openLCA on a new computer, and imported my database. When running a calculation on my project systems I got a different results than I got before. I have the earlier results extracted in excel, and they seem a lot more reasonable.

In the new version, the transport is negative in every process linked, both the transport I have manually created as a flow, and that which is taken from ecoinvent database in the background system. I don't think I have changed anything in the system that could cause this change. Could there be some type of settings causing this? Someone who has had a similar experience?

Thank you,
Elin

Edit: I realized the results differ depending on if I'm using version 2.0.3 and 2.0.4. I attach screenshots showing results in version 2.0.3 (total result ~237 kg co2-eq) and in version 2.0.4 (total result ~157kg co2-eq).

What could cause this difference?

Edit 2: 

I include some screenshots from a specific process that in version 2.0.4 shows minus infinity, but in 2.0.3 gives reasonable results. I am using ecoinvent 3.9.1 (cutoff).

 

Answer 1

New openLCA 2 has impact directions, probably you will need to update the LCIA method as well (but this should not only afffect transport). If you want, post screenshots here. Thank you.

Comments

Thank you. I realized the results differ depending on if I'm using version 2.0.3 and 2.0.4. I attach screenshots in the post. Would I need to update something in the database to make it work in 2.0.4?