altera_connection_identification_hub error - altera_connection_identification_hub error Hi, During compilation of a design in Quartus Prime 17.0, I get following error, Warning (12019): Can't analyze file -- file db/ip/slde4bbd51f/altera_connection_identification_hub_170/synth/alt_sld_fab_altera_connection_identification_hub_170_iq3gmfi.sv is missing However, I can see the file (.sv) in the path and I can read it. As a result, I got following 12006 Node error Error (12006): Node instance "ident" instantiates undefined entity "alt_sld_fab_altera_connection_identification_hub_170_iq3gmfi". Ensure that required library paths are specified correctly, define the specified entity, or change the instantiation. If this entity represents Intel FPGA or third-party IP, generate the synthesis files for the IP. I used assignments to point to the library "db/ip/slde4bbd51f/altera_connection_identification_hub_170/synth" to allow picking up the .sv file. But it did not help. I also copied the .sv file to another folder and pointed it as a local library and that did not help as well. Screenshots are attached. regards, Charles Replies: Re: altera_connection_identification_hub error Thank you. Fixing the path, fixed the problem. Replies: Re: altera_connection_identification_hub error Found there were spaces in the path which was causing the problem. Fixed the path and it is working now. Thank you. Replies: Re: altera_connection_identification_hub error Is your project upgraded from an old version? And please check if your full path is correct (without characters not allowed). Replies: Re: altera_connection_identification_hub error Two things: 1) What debugging tool are you using that is adding in the sld hub? Signal Tap? 2) There are spaces in your project path. That could be the problem.