The path must go beyond the split to two tracks. If you stop the path at the signal before it, the path will not control the junction lever. It also means that the end signal comes in the middle of the opposite path.
-----Sup1\
------------\__S2________________________
------------/
-Sdn3----/...
When you create the path a yellow line shows along the track. The path must cover the full length of the single section. The start signal is before the single section and the end signal is after the single section (this may be forward facing or the backside of the first signal it sees). This is...
You should open the portal properties window and make sure produce trains is selected. At the bottom select add existing consist. Highlight the consist you want and select the tick at the bottom of the consist list. This places the consist in the portal, and then add a driver.
The second part is...
123794 is the Plus version for Plus membership users only. 123801 is the retail version for non-membership users. 123794 has a higher build number than 123801.
Are you trying to install from MyTrainz at the top of this page?
If yes, scroll to the products list on the left, select the download you want, and then click on the online download to install automatically.
Only you can delete assets you have used in a route. The asset may be open for edit, so it will show as missing in the route. You may have used an updated asset from a DLC package and later deleted that package.
Those triangles are a ground shadow, as the sun moves so will the triangle. The lower the sun, the longer the shadows. As the sun rises above the hill the shadow will vanish.
A session can be placed on the DLS as it is not part of the package. It will require anyone downloading it also to download the DLC package. Just put the information into the description.
The invisible loco is used in ATLS assets to control level crossings. it was also used in some other assets to control the opening and closing of lift bridges if you did not want the default state.