Thanks for the report.

Can you run Build > Clean and then attach the full log with both of the below options enabled so we can see the entire build process:
vMicro > Compiler > Verbose
vMicro > Compiler > Show Build Properties

and also post of send us a screen grab of the "Tools>Options>vMicro>compability". That will allow us to confirm you have not changed the compatibility defaults.

Thanks for the project.

The root issue with compilation here is the MStepper.h and MStepper.cpp files are not part of the project (i.e. don't show in Solution Explorer).

If you close the project, and then open it using File > Open Arduino Project it will correct this and the project should compile as expected.

Alternatively you can manually add the files by right clicking the project and clicking Add > Exisitng Item.

This only has to be done once, and we will investigate why these weren't picked up automatically from the Tools > Options > vMicro > Compatability > Compile ALL Project Folder Sources setting being enabled.

(NOTE: We had to amend a few elements in the code to get it to compile in Arduino or vMicro for declarations not matching definitions on variable types, and ensuring the goPlus function was part of the MStepper class in the cpp).

The latest release (24.0926.0) is available from the top of the board below with the fix for this issue:
https://www.visualmicro.com/forums/YaBB.pl?board=VS_ARDUINO_EXT_RELEASES