Changing the alternative of a parameter value associated with a parameter list with non-numeric values causes an error about spine-toolbox

[jkiviluo]

Great to have this reproduced. I've seen the error message many times, but haven't figured out the pattern. I don't think anything goes wrong other than the message, right? It's confusing though.

Let's see if it's in 0.8, fix there first and roll it to 0.7 too.

[PiispaH]

This doesn't seem to happen in 0.8 anymore. Probably not worth it to fix in 0.7 @soininen @jkiviluo ?

[jkiviluo]

I'm ok if it's not fixed in 0.7, since it doesn't corrupt data (although users do see it from time to time). How about @DillonJ?

[PiispaH]

Doesn't replicate in 0.8.