This ExpressTools command for AutoCAD changes the destination directory for BAK files. Instead of ending up in the same directory as the DWG file the BAK file can be placed in another directory.
New value for MOVEBAK, or . for none <>: d:\temp
Unable to transmit selected drawing file. (I have no idea why this message comes, the bak file is actually placed in d:\temp)
New value for MOVEBAK, or . for none <d:\temp>: .
Here is how you can set the path using AutoLISP:
(setenv "AcetMovebak" "c:\\temp")