It seems 12da files made in Civil 3D don’t read in correctly in versions of 12D greater than version 10.
12D does have an old reader that allows you to read them in, its buried in the menu’s though.
See below.
File I/O -> Old -> 12da/4da data
“Note the OLD!!!”
UPDATE: *.12daz files are just zip files. Rename it to <YOURFILE>.zip and extract the *.12da file within
If anyone has been trying to use the 12DA import extension for Civil 3D and it isn’t working. Read on!
I have been having problems importing latest 12DA files. It doesn’t import anything for some reason.
A simple change to the 12DA files encoding fixes the error. Get NOTEPAD ++ Download Here
Old 12DA files encoded with “UTF-8 without BOM” will work. However new ones encoded with “UCS-2 Little Endian” won’t convert them and save as shown below. All working again!
Extra Bonus (courtesy lem_1020)
“Saved this way it actually allows you to open new version 12da projects in old 12d model versions also.”
Kapanther
Original Post Here
