Hi Random Guy,
are you using the old "DMP 64/128" or the new "DMP 64/128 Plus"?
If I remember right there are a few modules in the files section, I did some work on this almost 3 years ago.
When using the module that I modified and uploaded, please have a look at the example. It sets the DMP to verbose mode 3, which is important to make the module work properly.
In addition, each module needs to be polled upon startup before usage, this will initialize the values and feedback.
Questions welcome
Crestronfreak55.