Multiple Libraries


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Need help with this one, new too this sort of equipment and software, building an audio guest book for a friend, built hardware and got software, but get this message. using a teensy 4.0 with audio board and programming via an Apple Mac using software recommended by the web site, any ideas??
Not sure, but looks like the top one is the Teensy version of SD, and the lower one I'm not sure. The error, though, is not related to having multiple copies of SD, but rather that the build tools can't find <MTP_Teensy.h>. Have you installed the MTP_Teensy library?