Do the examples run?
You may want to double check the original 4 maxgui modules are not still present in your brl.mod folder as this would be something that could cause some confusion. If so, remove and rebuild documentation again (or maybe even better rename blitzmax folder as something else and begin with a clean 1.3 install as).
From the changes you mention I would definitely start with clean unpack of the maxgui modules making sure you end up with 7 .mod folders inside a folder named blitzmax\mod\maxgui.mod (including unfortunately a maxgui.mod folder producing the rather confusing directory name blitzmax\mod\maxgui.mod\maxgui.mod).
You may want to double check the original 4 maxgui modules are not still present in your brl.mod folder as this would be something that could cause some confusion. If so, remove and rebuild documentation again (or maybe even better rename blitzmax folder as something else and begin with a clean 1.3 install as).
From the changes you mention I would definitely start with clean unpack of the maxgui modules making sure you end up with 7 .mod folders inside a folder named blitzmax\mod\maxgui.mod (including unfortunately a maxgui.mod folder producing the rather confusing directory name blitzmax\mod\maxgui.mod\maxgui.mod).