It is the entire c runtime library that is missing not just one dll. There is apparently a licensing issue as well (you need a Microsoft license to redistribute the c runtime library) . The error appears to be issued by Windows not Fritizing and I so far have not found anything on the net that tells me how Fritzing would detect that the run time library is missing before calling it to issue a better error message than is currently done. Lots of information on how to download the library from Microsoft (and warnings about licensing) but no detection code that I have found. If someone knows of a way I’d appreciate a pointer.
Peter