Sorry, yes, this has been reported for Linux as well. This is ONLY used for debugging outputs (and Visual Sudio compiles it without complaining). You may safely comment out all lines that involve a call to ‘getToString’. I have already updated the code locally, but not yet in the package on the website (not sure whether I should consider this as a ‘new version’, since it does not affect the functionality in any way). However, I’ll probably upload the ZIP with the updated source soon.
I have just uploaded the updated source code. Since this was mainly an issue with the compilation, it is not considered as a new version. Hopefully it works now, since I can not test this on Windows, but since I removed the calls that it complained about, everything should be fine.