Help is on the Way!
Mine does the same thing. Use the FTP download, it works better. Select FTP on the DLS, a window will come up askig you if you want to open or save the file, select save, then when it is finished, go to "Recent Items" on your computer, there will be a list of your recent Items, the one with KUID.... is the trainz one, click it, then it will open CMP, make sure to commit the item. Private Message me if it worked or if you need further help.
Cheers, Woody.