Error When Loading The VST-Plugin "M1 Legacy"

[moerlin]

Hello,

I have been using M1Le for quite some time now in combination with Image-Line's FL Studio and never had the problem of not being able to load the plugin more than once. But now it is not possible to open the plugin a second time, if I have the drums in one track and the string in another, for example.
While one instance alone works flawlessly, upon opening a second instance of the program, I get the following error:
"Something went wrong loading the VST plugin M1 Legacy. Please make sure it's installed and registered properly."
In various internet forums I have read about the fact that this apparently is a limitation inside the plugin itself and that the problem could only be solved by purchasing KLC-DE. But that confused me, becaused it had already worked without any issues before.
I cannot remember changing any settings (either M1Le and FL Studio). Also, re-installing the plugin had no effect on the problem.
So, what can I do to solve this issue?
Thanks in advance.

Regards,
- moerlin