It has been almost 4 years since this post and I just had the same problem. Insane that this is still not fixed. But your fix worked great, thanks a lot!

Thanks guys, I also just found my problem. For some reason after generating code, either from TouchGFXDesigner or from CubeMX my root Folder is removed from the Source Locations, leading to this strange error message.So, adding it back manually in th...

Hey @NAnand1,I am having pretty much the same error, just the last line is 0xf3af4804 in ?? () for me. Did you find any fix or workaround for this error?

Hey @Reneb,thanks for the fast reply. You are right, I also had the project on a server. Copying the project to local and running the code generation there worked fine. Really annoying bug but thanks a lot for the workaround!

Hey I am having exactly the same problem, did you find any fix yet?I am trying to add modbus communication via USB to a program running on a STM32F49I Discovery Board. This error only seems to occur after having added the USB_DEVICE or USB_HOST Softw...