C++ External Node & XML Issues

[HISEnberg]

@Christoph-Hart

Github issue: https://github.com/christophhart/HISE/issues/866

I've been getting a lot of these errors lately (maybe since the last 3-4 weeks?)

XML file is not valid. Loading aborted

Usual context is having a hardcoded FX module with a custom C++ node (or Scriptnode Networking containing a C++ node). If I remove the reference in a text editor (.xml), the project will load and I can add my node back in. But resaving and opening again will reproduce this issue. Mind you it isn't a matter of updating HISE or recompiling the FX, this happens on any build from this year.