Oh wow, thanks. I'm not sure where I got the idea of accessing it like that.
Okay, I created the array and replaced the instances of [adc~ 17.x] with the corresponding tabread numbers.
Now when I try to build and run the Pd patch through the IDE, everything starts like it did before but then I get the following errors:
...
pack: 0 0 0 0 0 0 0 0 0 0
Segmentation fault
Makefile:595: recipe for target 'runide' failed
make: *** [runide] Error 139
Bela stopped
More specifically, I have a [metro] > [message box with specific array number] > [tabread bela_multiplexer] > [change] > [gate] > etc
No other changes were made. It used to build and run with the [adc~ 17.x], etc.