error when adding and using my own library in modelSim? - error when adding and using my own library in modelSim? Hello, I have the same problem as the question here but the solutions still not working for me https://community.intel.com/t5/Programmable-Devices/Modelsim-compiling-error-vcom-11-Could-not-find-work-stratixiv/td-p/176820 SO I have my modelsim files in Desktop/FPGA/Altera/filter then I added my_lib.all as :use work.my_lib.all and my_lib is in work and also in folder filter but still same error. I changed it to : use filter.my_lib.all and still says filter is unknown! I feel like I do not know how to manage files in modelsim too, is there a tutorial on it? Replies: Re: error when adding and using my own library in modelSim? Hi, I’m glad that your question has been addressed, I now transition this thread to community support. If you have a new question, feel free to open a new thread to get the support from Intel experts. Otherwise, the community users will continue to help you on this thread. Thank you. Regards, Nurina PS: If you find any comment from the community or Intel Support to be helpful, feel free to give Kudos. Replies: Re: error when adding and using my own library in modelSim? Thank you, I have found the problem which was the name where I saved it. Thank you for the two very important links, very important for beginner like me Replies: Re: error when adding and using my own library in modelSim? Hi, Can you upload a full message of the errors? On ModelSim, go to Help->PDF Documentation -> User's Manual. You can refer to Chapter 3 Design Libraries. Or you can go to Help->PDF Documentation -> Tutorial. You can refer to Chapter 5 Working with Multiple Libraries. Regards, Nurina