Haha, yesterday I found a problem which I wasnt aware of since the function was not used for longer time. Its about dynamic compilation of a C# file during app runtime. To do this, you need to include some using references at the top, though they are not used in the file itself.

Below this block was a comment: "// DO NOT REMOVE UNUSED usings BECAUSE THEY ARE NEEDED FOR DYNAMIC COMPILATION - DO NOT TOUCH THIS BLOCK !!!!!!!!!

-> Claude has removed the using block in question during its last session :-X