We are trying to move to drools 7 from drools 6.5.0.Final.

When a rule contains an 'or' of multiple facts, and those we bind on a property of those facts, and then use that property in an eval(); the serialization and subsequent deserialization causes an NPE when trying to run the network.

I was looking at the drools 7 docs and it does not look like there have been changes to what can and can't be done with eval() statements. We have stopped using them but we have a lot of legacy rules from a long time ago.

I feel like I am logging a lot of bugs, 2 (sort of 3, a long time ago) for this move. We are probably not using drools in a very standard way. Let me know if these is a better way or if I should log these issues differently. I am also not sure if this should be critical, but it does cause "loss of data" in that it makes it impossible to serialize and then deseiralize the networks, i.e. data.