Dear OSX / Apple Wing Helper users,
It was reported to me, that Wing Helper is not compatible with the Big Sur version of OSX.
Unfortunately, OSX is by far the least pleasant OS to cross-develop for: no other OS gives so much troubles as OSX when it comes to newer versions. Wing Helper is developed and tested on Sierra (10.12.6) and on Mojave (10.14.6). I did not receive any error reports for Catalina (10.15.x) and High Sierra (10.13.x), but I was not able to test it myself.
For other versions of OSX, I unfortunately can not guarantee the compatibility and I am also not in the position to make sure the compatibility can be achieved - I just don't have the means to install and maintain a new version of Wing Helper every time Apple decides to break the compatibility with older applications.
I am sorry for inconvenience.