Batch Exporter - The path is not of a legal form

[InTheBeef]

The batch exporter does not seem to work.
100% of the files being input are .bcres models. (Pretty sure textures folder doesn't work either)
I tried in multiple locations, including near the start of the drive. (e.g X:\Batch\Input)
Tried pasting location manually and using the ... browser to find the location.
Error pops up instantly when pressing Convert, so I'm assuming it's nothing to do with the files and those open normally in the program without issue.
(which names are formatted like so: XXX_XXX_X.bcres)
Using .dae format, Export models / textures is checked.
Latest version of SPICA afaik, from the lastest automatic build for Windows

errorlog.txt