Hi, Andreas:
I came across this error message when I tried to load a plugin in AG. (Windows server and Logic). It doesn't happen for all of the plugins. But it happens on the softube plugin parcifically.
The solution I found is to load a working preset saved on the windows server first and then I can load the that plugin. After I save it as a preset, it works everytime. Without the preset, I will get the error message.
There is no crash file or log file that is related to this.